英语:这里的then是什么意思中文呢?对这...

then是什么意思,词典释义与在线翻译:
adv.(副词)
那么,因此,于是
然后,后来,接着
当时,那时,到那时
还有,而且,此外,另外
adj.(形容词)
那时,当时
conj.(连词)
那时,当时
adv.(副词)
当时,那时 at that time
接着,于是,然后 afterwards
还有,而且 and also
那么,因此 therefore
"we will arrive before then"
"we were friends from then on"
Adjective:
"the then president"
subsequently or soon afterward (often used as sentence connectors);
"then he left"
"go left first, then right"
"first came lightning, then thunder"
"we watched the late movie and then went to bed"
"and so home and to bed"
in that case
"if he didn't take it, then who did?"
"keep it then if you want to"
"the case, then, is closed"
"you've made up your mind then?"
"then you'll be rich"
"I was young then"
"prices were lower back then"
"science as it was then taught"
then的用法和样例:
用作副词 (adv.)
He'll be looking for a new secretary then?
那么,他就要找个新秘书了?
He took his hat and then left.
他拿起帽子,随即离开了。
We lived in the country then.
我们那时住在乡下。
用作副词 (adv.)
He was harassed then.
那时他焦急不安。
I hope we'll have finished by then.
我希望到那时我们已经完成。
Prices were not so high then.
当时的物价没有这样高。
These were social problems then.
这些均是当时的社会问题。
If they had been more careful then, they would get better results now.
如果他们当时更仔细些,他们现在就会得到更好的结果。
First came Mary, then Jane.
玛丽先来,然后简才来。
He wrote some letters, then he cleaned the car.
他写了几封信,然后清洗汽车。
Listen to the four choices, then draw a circle under the right one.
听四个选择,然后在正确的下面画一个圈。
We had a week in Rome and then went to Naples.
我们在罗马住了一星期,然后前往那不勒斯。
He was thoughtful for a while and then replied “no”.
他思索了一会儿,然后回答说:“不”。
I got into the bath and then the telephone rang.
我刚进澡盆,电话铃就响了。
Then came the day of his examination.
后来到了他考试的日子。
Then opens an epoch of social reform.
接着开始了一个社会改革的时代。
“Is it going to rain?”“ Probably.” “Then we had better stay at home.”
“天要下雨吗?”“ 大概要下。”“ 那么,我们最好留在家里别出去了。”
Where did she go then?
那么她到哪里去了呢?
“Is it because the plan is too expensive that you oppose it?”“No.”“What is your objection then?”
“你是因为这个计划花费太大才反对吗?”“不是因为这个。”“那么,你的反对理由究竟是什么呢?”
The result of all this activity, then, was that the government became very unpopular.
所有这一切活动的后果就是,政府变得不得人心。
用作副词 (adv.)
此外,还有 otherwise
And then Mr. Johnson, we must ask him to come.
还有约翰逊先生呢,我们一定要请他来。
And then, you must remember how difficult it is.
此外,你一定要记住它有多么难。
但另一方面是 however
Your plan is a good one, but then it would take too much.
你的计划是好,不过费时太久花钱太多。
The method is good, but then it will take too much time.
方法虽好,但太费时间了。
I like watching television but then I wouldn't miss it if I didn't have one.
我爱看电视,不过如果没有电视,我也毫不在意。
(every) now and then
有时,时而,不时 occasionally
Now and then we heard shots in the woods.
我们不时听到森林里传来的枪声。
We go to the films now and then.
我们常常去看电影。
I like to smoke a big cigar every now and then.
我时而喜欢抽一支大雪茄烟。
Every now and then it stops altogether for no reason at all.
它经常无缘无故地停下来。
喂,嘿,好了 well
Now then, what's troubling you?
喂,你有什么苦恼呀?
Now then, be careful or you'll hurt yourselves.
喂,小心点,不然会碰伤你的。
Now then, stop talking and listen to me, everybody.
好了,别讲话,大家听我讲。
there and then〔then and there〕
当时当地 at that time and place
There and then he kissed her and asked her to marry him.
他当场吻了她,向她求婚。
You should have pointed out his mistakes then and there.
你应该当场就指出他的错误。
well, then
那好吧 all right then
Well, then, what do you think you are doing?
那好吧,那么你认为自己在做什么?
what then〔then what〕
(下一步)怎么办,又怎么样呢 how to do next
After you have finished this process, what then〔then what〕?
你做完这一步后,接下去怎么办?
而且还远不止此...
但另一方面
正在那时, 刚才...
下一步怎么办...
这是怎么回事?,后来...
若是那样的话...
I hope..to pay you a visit (if you are then at Bristol).
出自:C. Lamb
He had caught what was then known as a social disease.
出自:G. Greene
There was no TV then.
出自:J. Kosinski
Sylvia cried only rarely, but she cried then.
出自:C. Harman
then的详细讲解:
adv.(副词)
then的意思是“当时,那时”“接着,于是,然后”“还有,而且”“那么,因此”,作“那时”解时可指过去,也可指将来。
then作“那么”解时常用于句首或句末,用来缓和语气; 作“然后”解时常位于and之后,所修饰的词语之前,起连接作用。
then有时可用于对已经提到过或刚提到过的某物表示一般的看法,可译作“则是,就是”。
then用作状语作“接着,于是,然后”解时也可位于句首,这时句子要用倒装语序。
then间或可用作形容词,用来修饰名词,意思是“当时的”。例如:The matter was reported to the then head of the secret service.此事向当时的特工部门主管报告了。
adv.(副词)
then and there, now and then
这两个短语的意思并不相同:then and there的意思是“当时当地”,含有时间和空间的双重概念; 而now and then的意思是“有时,时而,不时”,只有时间概念,没有空间概念。
then, accordingly, consequently, hence, so, therefore, thereupon, thus
这组词的共同意思是“因此; 所以; 于是”,它们的区别是:
1.so, then和thus是一般用词; accordingly, consequently, hence, therefore和thereupon是正式用词。
2.so和then常用于简洁的日常谈话,语义较轻,只表示因果关系或逻辑顺序,而不一定表示严格的推论关系。
3.accordingly, consequently, hence, therefore, thereupon和thus都表示因果关系。accordingly语气较缓和,常译为“于是”; consequently一般不强调因果间的必然联系,而只是根据逻辑推理得出的结果; hence表示合理的推断,指出原因及其必然结果,但更强调原因; therefore强调因果间的逻辑关系,多用于表示严密推理或精确论证的郑重场合,故常用在数学、逻辑学等领域; thereupon则指“作为…的结果”; thus的意思和hence, therefore相近,但更正式庄重。
4.accordingly常位于(分句)句首或句中; consequently, hence常位于(分句)句首; so只用于分句句首; then常用于分句句首,有时用于句末; therefore和thereupon常用于(分句)句首,有时用于句中; thus常用于(分句)句首。
5.consequently, hence, so, then, therefore和thereupon前有时可加 accordingly前偶尔可加 thus前一般不可加and。
6.hence常引导省略句; thus还可跟现在分词短语表示结果或目的。
☆ 直接源自古英语的thanne,意为那时。
then的海词问答与网友补充:
[例句用法]1.于是,所以要。
Then I told him a little about you.然后我告诉了他一点点关于你的事情。是主要讲了然后我告诉了他,而不是我告诉了他,两种语法不是一样的。许多初学者经常犯错,所以我为了提高辨认度,写了一个a little,就是要求不要犯错。
[释义]1、于是,所以
He, then, decided to accept the proposal.
于是,他决定接受这一建议。
2、此外,还有
The applicant has had some experience in this kind of work, and then he is easy to get along with.
那位申请人以前做过这种工作,另外此人很容易相处。
then的相关资料:
then&:&当时;那时 ...
在&&中查看更多...
【近义词】
在 ... 之上
除 ... 之外
在那里(当地...
在那个时候
正在那时, 刚才...
同 ... 一起
与...在一起
但另一方面
由于那个缘故...
情况既然如此...
因此(由此看来)...
【反义词】
then:then adv. 当时, 在那时, 那么, 因而, 然后, 于是Google提供的广告习惯用语before then 那时以前but then 但是, 但是另一方面by then 到那时候from…
相关词典网站:&& 查看话题
这段实验操作的英文是什么意思
The reaction was cooled to rt and poured onto ice (400 mL) with 30% H2O2 (3 mL). For workup,&&the mixture was sifted through a metal U.S. Standard testing
sieve and then filtered through polyester fiber. The filtrate was centrifuged (4000 rpm for 4 h), and the supernatant was decanted away.
反应溶液冷却至室温,然后倒在含有30%H2O2的冰上?是这个意思吗?
还有for workup 是指什么?
滤出液体将近一升,没那么大离心机啊?
请高手指教,能详细说一下这个操作过程
是 氧化石墨烯的合成 ~~~就是倒在400ml的冰上,然后加3ml30%的H2O2,反应完了之后,离心。怎么么那么大的离心机啊,你可以分装在几个离心管啊~~ 果然是高手,莫非你做过氧化石墨烯合成,希望能跟你多交流。
反应溶液都400mL,加400mL的冰,总共800mL,看来还要找个大点儿的离心机 反应溶液冷却至室温,然后倒在含有400ml,冰中,加3ml的30%双氧水。for workup(反应完后,或者淬灭完后),过筛(a metal U.S. Standard testing sieve ),然后通过聚酯纤维过滤(l貌似就是滤布?)。滤液离心(4000 RPM)4小时,上清液倒掉。
个人觉得如果可以抽滤的话就直接抽滤吧,搞那么复杂干嘛,除非你那混合物浆糊糊很难过滤:tiger19: 过筛我也觉得没什么必要,而且筛子是金属的,不会腐蚀吗?
按照他们的方法,后面还要用盐酸洗,还要过筛,过滤布,离心,确实很麻烦。以下是完整方法
a 9:1 mixture of concentrated
H2SO4/H3PO4 (360:40 mL) was added to a mixture of graphite
flakes (3.0 g, 1 wt equiv) and KMnO4 (18.0 g, 6 wt equiv), producing
a slight exotherm to 3540 °C. The reaction was then heated
to 50 °C and stirred for 12 h. The reaction was cooled to rt and
poured onto ice (400 mL) with 30% H2O2 (3 mL). For workup,
the mixture was sifted through a metal U.S. Standard testing
sieve (W.S. Tyler, 300 m) and then filtered through polyester fiber
(Carpenter Co.) The filtrate was centrifuged (4000 rpm for
4 h), and the supernatant was decanted away. The remaining
solid material was then washed in succession with 200 mL of water,
200 mL of 30% HCl, and 200 mL for each
wash, the mixture was sifted through the U.S. Standard testing
sieve and then filtered through polyester fiber with the filtrate
being centrifuged (4000 rpm for 4 h) and the supernatant decanted
away. The material remaining after this extended,
multiple-wash process was coagulated with 200 mL of ether,
and the resulting suspension was filtered over a PTFE membrane
with a 0.45 um pore size. The solid obtained on the filter was
vacuum-dried overnight at room temperature, obtaining 5.8 g
of product. 楼主可否解决你的问题?我最近也在参考这个文献做氧化石墨烯,得出来的产物是糊状的,根本没法过筛和过滤,只能反复水洗离心之后盐酸洗,再反复水洗至接近中性,最后低速离心(4000rmp,15min)取上液,再高速离心浓缩。觉得乙醇洗和乙醚洗涤没有多大的必要。 : Originally posted by zhaoyunm at
楼主可否解决你的问题?我最近也在参考这个文献做氧化石墨烯,得出来的产物是糊状的,根本没法过筛和过滤,只能反复水洗离心之后盐酸洗,再反复水洗至接近中性,最后低速离心(4000rmp,15min)取上液,再高速离心浓 ... 想问下一大杯溶液怎么水洗?先离心后沉下来的再水洗? : Originally posted by foolishmani at
想问下一大杯溶液怎么水洗?先离心后沉下来的再水洗?... 嗯,先离心! : Originally posted by zhaoyunm at
楼主可否解决你的问题?我最近也在参考这个文献做氧化石墨烯,得出来的产物是糊状的,根本没法过筛和过滤,只能反复水洗离心之后盐酸洗,再反复水洗至接近中性,最后低速离心(4000rmp,15min)取上液,再高速离心浓 ... 可以说一下具体的实验步骤吗?我也在用改进法合成可是一开始就失败了就是混合算加到混合固体中,具体步骤不知道怎么办?烧杯都冒烟了 : Originally posted by z at
可以说一下具体的实验步骤吗?我也在用改进法合成可是一开始就失败了就是混合算加到混合固体中,具体步骤不知道怎么办?烧杯都冒烟了... 朋友 你解决了吗&&我也是参考这篇文献 最近在看 总结了一下步骤 麻烦看一下对不对 谢谢
1、将3克质量分数为1%的石墨片与质量分数为6%的KMnO4混合;
2、按体积比9:1的比例配置H2SO4/H3PO4混合液400ml,然后加入到石墨片与KMnO4混合液中,慢慢放热至35-40℃,然后加热至50℃,搅拌12h;
3、冷却至室温,并倒入大约400ml的冰水中,并添加3ml 30%的H2O2溶液;
4、待反应结束后,过筛,通过聚酯纤维滤布过滤;
5、滤液通过离心机离心(4000rpm)4h,并把上清液倒掉;
6、剩余的接连用200ml的水,200ml的30%的HCL以及200ml的乙醇洗,洗涤两次;每一次洗涤重复步骤4,5
7、然后再用200ml的乙醚洗,得到的悬浮液通过0.45微米孔径的PTFE膜过滤,得到的固体在室温下真空干燥24小时,得到5.8g产品。 : Originally posted by waterhua at
过筛我也觉得没什么必要,而且筛子是金属的,不会腐蚀吗?
按照他们的方法,后面还要用盐酸洗,还要过筛,过滤布,离心,确实很麻烦。以下是完整方法
a 9:1 mixture of concentrated
H2SO4/H3PO4 (360:40 mL) wa ... 楼主 你好&&我也是参考这篇文献做的&&总结了一下步骤 麻烦帮忙检查一下 谢谢
1、将3克质量分数为1%的石墨片与质量分数为6%的KMnO4混合;
2、按体积比9:1的比例配置H2SO4/H3PO4混合液400ml,然后加入到石墨片与KMnO4混合液中,慢慢放热至35-40℃,然后加热至50℃,搅拌12h;
3、冷却至室温,并倒入大约400ml的冰水中,并添加3ml 30%的H2O2溶液;
4、待反应结束后,过筛,通过聚酯纤维滤布过滤;
5、滤液通过离心机离心(4000rpm)4h,并把上清液倒掉;
6、剩余的接连用200ml的水,200ml的30%的HCL以及200ml的乙醇洗,洗涤两次;每一次洗涤重复步骤4,5
7、然后再用200ml的乙醚洗,得到的悬浮液通过0.45微米孔径的PTFE膜过滤,得到的固体在室温下真空干燥24小时,得到5.8g产品。 : Originally posted by zhaoyunm at
楼主可否解决你的问题?我最近也在参考这个文献做氧化石墨烯,得出来的产物是糊状的,根本没法过筛和过滤,只能反复水洗离心之后盐酸洗,再反复水洗至接近中性,最后低速离心(4000rmp,15min)取上液,再高速离心浓 ... 水洗之后,你是测剩余的混合液到中性吗 : Originally posted by waterhua at
果然是高手,莫非你做过氧化石墨烯合成,希望能跟你多交流。
反应溶液都400mL,加400mL的冰,总共800mL,看来还要找个大点儿的离心机 问一下,石墨片哪里买的 : Originally posted by aiqing2150 at
反应溶液冷却至室温,然后倒在含有400ml,冰中,加3ml的30%双氧水。for workup(反应完后,或者淬灭完后),过筛(a metal U.S. Standard testing sieve ),然后通过聚酯纤维过滤(l貌似就是滤布?)。滤液离心(4000&&... 问一下大神,我还没做过&&我想问一下前面过筛过滤留下的固体是什么?然后滤液离心后,上清液倒掉剩下的是什么? 然后文中有一个remained solid material 是指开始过滤过筛留下的固体 还是后来离心倒掉上清液后的固体 : Originally posted by zhaoyunm at
楼主可否解决你的问题?我最近也在参考这个文献做氧化石墨烯,得出来的产物是糊状的,根本没法过筛和过滤,只能反复水洗离心之后盐酸洗,再反复水洗至接近中性,最后低速离心(4000rmp,15min)取上液,再高速离心浓 ... 请问你做成功了吗? : Originally posted by zhaoyunm at
楼主可否解决你的问题?我最近也在参考这个文献做氧化石墨烯,得出来的产物是糊状的,根本没法过筛和过滤,只能反复水洗离心之后盐酸洗,再反复水洗至接近中性,最后低速离心(4000rmp,15min)取上液,再高速离心浓 ... 离心之后取上夜?不是应该倒掉吗 : Originally posted by
朋友 你解决了吗&&我也是参考这篇文献 最近在看 总结了一下步骤 麻烦看一下对不对 谢谢
1、将3克质量分数为1%的石墨片与质量分数为6%的KMnO4混合;
2、按体积比9:1的比例配置H2SO4/H3PO4混合液400ml,然后加入到 ... 我想问一下,你这个每一次洗涤 是算两次还是算六次?1 Let us go then_百度文库
两大类热门资源免费畅读
续费一年阅读会员,立省24元!
1 Let us go then
上传于||文档简介
&&L​e​t​ ​u​s​ ​g​o​ ​t​h​e​n
阅读已结束,如果下载本文需要使用
想免费下载本文?
下载文档到电脑,查找使用更方便
还剩5页未读,继续阅读
你可能喜欢英语翻译Then the faces of the boys and girls came into view.这个句子是什么意思came into_百度作业帮
英语翻译Then the faces of the boys and girls came into view.这个句子是什么意思came into
英语翻译Then the faces of the boys and girls came into view.这个句子是什么意思came into
你可以理解为映入眼帘,全句的意思是然后那些男孩女孩的面容映入眼帘英 [ nau aend ?en ]
美 [ na? ?nd ??n ]
有时,时而,不时;
添加到生词本
选择要添加的生词本
Now and then they heard the roar of a heavy truck.
他们不时地听到大卡车的轰鸣声。
Every now and then you hear some bombs bursting.
你会时不时地听到一些爆炸声。
Now and then I referred a client to him.
我不时地介绍客户给他。
He might even have nodded off now and then.
来自NEWYORKER
Now and then it rained hard brief summer downpours.
来自NEWYORKER
Now there will be a necropsy and then cremation.
有时, 时而, 不时
Now and then we heard shots in the woods.
我们不时听到森林里传来的枪声。
1. now and th
" "he was arrogant and occasionally callous" "
" "open areas are only occasionally interrupted by clumps of trees" "
" "they visit New York on occasion" "
" "now and again she would take her favorite book from the shelf and read to us" "
" "as we drove along, the beautiful scenery now and then attracted his attention" "
大学英语四级常用词组 ... nothing but 只有,只不过 now and then 时而,偶尔 off and on 断断续续,间歇地.
- 基于4542个网页
大学英语四级常用词组 ... take notice of 注意,留心 now and then 时而,不时 from now on 今后,从现在起.
- 基于4506个网页
大学英语四级常用词组 ... take notice of 注意,留心 now and then 时而,不时 from now on 今后,从现在起.
- 基于2714个网页
【资源】英语常用短语 ... not both 不都 now and then 有时;不时地 now that 既然(引导原因状语从句).
- 基于400个网页
then and now
过去与现在 ...场由年冠军加拿大队压轴,主题为“过去与现在”(Then and Now),今年将重新诠释大家耳熟能详的乐曲,让观众耳目 …
- 基于45个网页
那时和现在 世界上最美丽的英文-博库网... ... The Watcher 守护者 Then and Now 那时和现在 These Things Shall Never Die 这些美好不会消逝.
- 基于23个网页
every now and then
时时 词语的固定搭配_百度文库 ... neither...nor 既不……也不 every now and then 有时,时时,偶尔 just now 刚才,一会儿以前.
- 基于515个网页
不时地 高二英语词汇表 ... look into 调查;观察 every now and then 不时地 wanderlust n. 漫游癖.
- 基于404个网页
创建新的生词本
i该生词本已经创建啦!
i不可以出现中文,英文,数字之外的符号哒!
i生词本名称长度不能大于24字符!
i请填写生词本名称!

我要回帖

更多关于 if then是什么意思啊 的文章

 

随机推荐