《朗文》第六版ought to词条有一例句：You were out enjoying yourself when you ought to have been studying.应该学习的时候你却在外玩。这里have been studying是否应改为be studying?因为主句为过去时，所以ought to也表过去，其后再接个完成进行时，则...
—What's wrong with him? He seemed upset.—He had to give up his drawing, not because he wanted _______ that way but because he had to be.A. this B. one C. it D. such答案C. 请问这里 it 能否用 this 替换？this 指代上一句话不可以吗？还有后面的句子...
专家请看以下句子：And there are the townsfolk who largely live off the tourists who come, not to see the plays, but to look at Anne Hathaway's Cottage, Shakespeare's birthplace and the other sights.【我的疑问】"not to see the plays...(直到结尾)"是不定式to作...
So you're halfway to solving a problem just by
talking to someone about it!这是初中英语课本中的一句话，请问you're
halfway to solving a problem怎样划分句子成分，我的理解是主系表结构，halfway修饰介词短语to
solving a problem，但如果这样理解，为什么y...
▲下面句子是一道全国卷的高考题:Alien had to call a taxi because the box was much too heavy to carry all the way home.▲我对这道题有个疑问：那就是 to carry all the way home 的逻辑主语问题。由于句子主语是 the box，而 the box 是不可能 carry all the way ...
... her that evening after dinner. I found her alone. Her black dress, simple to austerity, suggested her bereaved condition, and I was innocently astonished that notwithstanding a real emotion she was able to dress the part she had to play according to her notions of seemliness.请教老师： simple...
Ability to think will accrue to you from good habits of study.有了良好的学习习惯，思考能力自然会增加。这里的to是"对于"的意思吗？想请教一下这个to you为什么放在accure的后面呢？ 为什么不把accure和from放在一起呢，"由什么什么慢慢积累，...
He
said something to the effect that he would have to change jobs if the situation
continued.这个句子中的to the effect
that是介词短语引导的从句吗？还是省略句，something
which is to the effect that…
The discovery, published in January in the Open Fish Science Journal, highlights the extent to which researchers are just beginning to grasp the complexity of marine creatures' behavior.这里的 to which 怎么理解？求详细语法分析。
Everyone thinks it is our nature to do so. But much of our thinking, left to itself, is biased, distorted, partial, uninformed or down-right prejudiced.请问left to itself作什么成份且该如何理解？
...页：b)在半助动词之后： 在半助动词之后用不带to不定式。例如： It's sure to rain. Have you got to go to the dentist's today. I happened to be out when he called.请教老师：上面3个例句不都出现了不定式to...
我看到了几种说法：1. To do…, svo. 句型中的 Inf的逻辑主语与句子主语可一致也可不一致：例如：To made stereo effects, two recordings are made the some performances. √2.不定式放句首时，逻辑主语与句子主语要一致。To save money, he has tried every ...