问题 被动语态中不定式的否定问题

肯定：be allowed to do sth 否定：be not allowed to do sth 肯定：sb be advised to do 否定：be advised not to do 为什么一个否定不定式，一个否定动词 be 呢？

问题 be in the fining line在句中的成分

问题 Does it matter if...还是Will it matter if...

______ matter if I stay here till the end of this week? A. Will it      B. Does it   C. Do you     D. Will you 答案为 B，有人问 A 可以么？请问这里适用主将从现原则吗？不是主句用将来时也可以么？请详细说说 matter 的用...

问题 关于情态动词和系表+to do结构互换.

can和be able to表能力，He can watch TV  now.   He can watch TV  tomorrow.前一句可以用be able to的现在一般时替换，后一句可以用现在将来一般时替换. 这个很好理解.    那么问题来了，must和be sure to表必定的推测时，He mu...

问题 It’s hard to do sth与It’s 

老师说 It’s hard to do sth也可换成 it’s hard doing sth，前者是不定式作真正的主语，后者是动名词作真正的主语。比如： It’s hard to finish the work in such a shgort time. = It’s hard finishing the work in such a short time. 我...

问题 be soon in 是固定用法吗（新概念三第11课句子）

All the things I had packed so carefully were soon in a dreadful messbe soon in 是个常见的固定用法吗?这个短语表示不一会变成的意思？为什么不是 be soon into?

问题 be the nearest we have to sb 是什么意思(什么用法)

He is the nearest we have to an Amearican Shakespeare.请问句中的 be the nearest we have to sb 是什么意思? we know 是什么用法?

问题 should be done/should have been done 时态差异存疑

He  should have been given (should give) more responsibility when he was youger.should have done 表示本该做的没做请问老师，这里能否填 should be given？在他年幼时，他应该被给予更多的责任？为什么？

问题 while protecting the environment中省略了主语和be动词吗

The challenge we face is to find ways to meet the needs of our growing population while _______(protect) the environment.这里填protecting是省略了主语和be动词吗？但是主语不是the challenge吗?

问题 It's my turn to do sth 结构中不定式是定语还是主语

It's my turn to do sth 结构中不定式是定语还是主语?It's my turn to clean up.  感谢!

问题 关于 be important to/for

请问以下2个句子有什么区别？ 侧重点有什么不一样？But China's satellites are important for improving the NAV system.But China's satellites are important to improve the NAV system.

问题 “上学迟到”用go to school late还是be l

请教：“最好不要上学迟到”翻译中，“上学迟到”用 go to school late 还是 be late for school？请专家指教，谢谢！

问题 it 用法实例分析

1.He thought it no use waiting here.2.They kept it quiet that he was dead.3.It is a waste of time your talking to him.第1，2,3句用it是什么语法现象?第1句是从句吗？no 是not any的意思吗，在该句中的no可以替换成not any吗？第2句是什么从句？It is a waste of time ...

问题 Who was it that…与 Who was it who…

Who was it ______ drove her home last night?填 that 肯定是可以的，请问可以填 who 吗？会不会跟前面句首的 who 重复，若真可以，麻烦老师提供一下出处或依据，谢谢！

问题 based on...所作成分分析

...后置定语 ？3 Based on the above reasons, a company will be my first and sole choice.这里的based on the above reasons 作什么成分？为什么没有逻辑主语？