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问题 as we know it在句子中如何理解

They say one day a meteor will strike the Earth,obliterating life as we know it.老师，as we know it是状语从句吗，分词短语里可以有状语从句这个句子成分吗？ 

问题 主语和宾语的单复数对应问题

...种用法应该怎么解释啊类似的还有福布斯杂志上的句子：The average age of men who have a first heart attack is 66

问题 given that中的given怎么理解？

...是像是……which is encouraging, given how many adults don't get the hours they need这句话中的given是介词吧，不然当做连词就没法加宾语从句了？但是翻译时候却要想成连词来翻，这很矛盾，怎么理解？还有像只有连词词性的provided that也可...

问题 一般现在时的真正含义

After the arrests governor Whitmer called out president Donald Trump for stoking distrust and fomenting anger.Trump responded by tweeting he does not tolerate extreme violence, and that governor Whitmer has done a terrible job.特朗普总统在推特上使用了does not, 一般现在时，是否表...

问题 存在句There came...和非存在句There goes...的理解

章振邦的书中说:There came a train.（存在句）There goes the bus.（非存在句）如何理解？

问题 描述已经已逝人物的身份或成功用什么时态

老师们，请问一下描述已逝人物的成果或者身份用什么时态？比如：Shakespeare is/was one of the most famous writers who has/had created more than ...plays.

问题 这里可以填did一般过去时吧

Did you watch the news just now？No, I did not. I ____ (do) my homework.答案横线上是用过去进行时，我想问的是刚刚就一定是过去进行时嘛，不可以填did过去时嘛，毕竟just now就可以修饰过去时啊，所以刚刚也可以表示一般过去时吧？

问题 名词后面跟着的When 是定语从句还是状语从句

请问各位老师，下面这两句话同样是跟在名词后面，怎么判断when 它引导的是定语从句还是时间状语从句呢？1. It was 1949 when the PRC was founded 2.It was three o’clock when we came back home.

问题 陈述语气还是虚拟语气（感觉 if 从句要用虚拟语气）

If she hasn’t had the baby already, she’s going to have it any time now. 这个句子的语法对吗？if 从句为什么不用虚拟语气？

问题 that表“前指”与表“后指”

Dr. Jane Goodall believes that the most importnat thing is that: "Every individual matters. Every individual has a role to play. Every individual makes a difference."本句出自北师大高中英语必修第三册第8单元(p31)。句中的 that 是属于后指用法吧！即这个 that 是指其...

问题 even if后面的这个achieve不该用完成时态吗

________ we achieve great success in our work, we should not be proud.空白处用 Even if，那 achieve 不该用完成时吗？用 Unless 虽说传达了不大积极的价值观，但语法完全没问题吧？

问题 这道题选择一般将来时还是将来完成时

If traffic problems can't be solved soon, driving in cities ______ impossible.A. is                           B. will beC. will have been      D. be这道题选择一般将来时还是将来完成时？

问题 cabbage, candy的可数性与单复数

...些可以提供他们足够钙和卡路里的东西。译文：They came in and ordered cabbage,candy and calf that would supply them with enough calcium and calories.问：跟椐汉语意思，"卷心菜、糖果和小牛"肯定不只一个，但这里却全用了单数，是什么原因？

问题 all-you-can-eat是什么意思

I think I ate too much at dinner last night.It was an all-you-can-eat meal at the restaurant.  如何翻译其中的 all-you-can-eat？

问题 涉及try doing与try to do的考题

You should try ( )the way i suggested,I'm sure you'd find it much easier.A.to doB.doingC.and doD.and doing