问题 to have done 用于表示将来完成?

...美国报纸2015年时的新闻报道语句：By 2019, they are projected to have fallen off by roughly a third since their peak in 2009.我知道这句话的意思应该是: By 2019, they are projected to fall off by roughly a third since their peak in 2009.为什么这个地方要用to have done...

问题 to this event是程度状语吗

What he lied to me was antecedent to this event.一般to组成的介词短语作状语吗？有些是固定搭配，如何很好区分这种情况？

问题 get to bedtime 起什么作用

He can have some food get to bedtime to help ease his drug reaction.插在句中的get to bedtime怎么理解它的成分作用? ?可以放到句末去吗?

问题 这个to是表示状态的转变吗

I went back to work on Monday.   我周一回去上班了。to work在这里是目的状语还是？We walked all the way back to camp.同理吗?

问题 it to在文中什么意思

“Wealth is even more hidden than income, because there’s no job to correlate,” it to, said Dalton Conley, a professor of sociology at Princeton University. 请问 it to 在文中怎么理解？

问题 as to 的用法

各位老师，请看下面例句：They were unsure as to what the next move should be.下一步该做什么他们心里没底。请问此处的as to 应该是介词性质吧？如果是介词性质，但是系动词+形容词后可以直接跟从句，为什么还要加个介词呢？或者说as t...

问题 to的用法

...ew catches-namely that Moflin's 5-hour battery life doesn't really hold up to, say, a cat's "battery" reserves.这句话hold up to怎么理解，这个to是相对于意思吗？，这个say是插入语吧，怎么会插在这两个词之间，感觉很怪。

问题 I fail to pass the exam. 和To pass the exam,I fail.

问题 I fail to pass the exam. 和To pass the exam,I fail.

问题 介词用法(for和to)

...pproach, the authors suggest in their book, would have been for the mother to offer ,as Ms. fox's own parents did, a later curfew once a month, along with an explanation of her concerns.请问这句话里的would have been for the mother to offer，for和to这两个介词怎么理解啊？我猜测...

问题 in two to four seconds是点时间还是段时间

...状语的用法有一点疑问，自己不太懂。But it is interesting to note，in the present research，that monkeys respond to stimulation in two to four seconds.这个句子出于美国动物世界！我想问下、这里in two to four seconds是点时间还是段时间？另外：这里的...

问题 entrance 后接介词of与to的区别

entrance 后有时接介词of，有时接介词to，请问它们的区别是什么？如：the entrance of the park / the entrance to the park 公园的入口the entrance of the hall / the entrance to the hall 大厅的入口the entrance of the cave / the entrance to the cave 洞穴的入口the entr...

问题 Intending 和 To intend 非谓语用法辨析？

(   ) the concert to raise money for hunger relief and to make the public aware of the problem, Geldof invited many famous musicians to take part in it.A. Intended B. Intending C. Having intended D. To intend老师，为什么答案是B. Intending ?  D. To intend 为什么不可...

问题 something might occur to的意思

I prayed that something might occur to prevent this meeting. might occur to是something的定语从句吗？something是occur to 的宾语？

问题 可以说wear sth to school吗

...到这样一句：The teacher won’t let the students wear such clothes to school. 老师不让学生穿那样的衣服上学。我怀疑这个句子有问题：我们可以说 take sth to school, bring sth to school 等，难道也可以说 wear sth to school 吗？请专家老师指点！谢...