话题 have/had known sb/sth (to) do ...

话题 to the best of one's ability

话题 so as for sb to do sth

话题 There is something to be said for

话题 If you should happen to see him

话题 It takes sb st to do sth

话题 involve sb to do sth有这样的用法？

话题 sb find it adj to do sth

问题 get a lot of ground to cover是什么意思

We've got a lot of ground to cover today. 我们今天有很多的事情要说。You’ve got a lot of ground to cover, so don’t expect to do it in one evening! 你还有很...

问题 be so good as to do 这是一种什么结构？ 其中，这里的as是副词吗？ 起什么作用？可否省略as?

...earn the advantage of minding your own business. If you will be so good as to turn your head slightly to the left, you will see the door. I wish you good-afternoon."请教老师： be so good as to do 这是一种什么结构？ 其中，这里的as是副词吗？ 起什么作用？可否省略as，...

问题 go to a British high school中的不定冠词可以省略吗

请问下面句子中的go to a British high school中的不定冠词可以省略吗？Going to a British high school for one year was a very enjoyable and exciting experience for me.  在英国上了一年的中学对我来说是一段非常令人愉快和兴奋的经历。句子来源：高...

问题 to a level that we believe that requires action是何意

If they elevate the threat of their weapons program to a level that we believe requires action then that option is on the table.这句话中的 to a level that we believe that requires action 是什么意思？是什么句子成分？

问题 关于the book is difficult to understand的疑问

...过了，但是还是想不明白。 1.the book is difficult (for people) to understand  这里不定式因为加了逻辑主语，主语和不定式是主动关系所以用主动2.the book is difficult (for the book) to be understood. 这句话如果逻辑主语是book呢，不能用被动形式...

问题 Add sth to sth 和 add sth in sth 的区别

为什么用 Add some milk to coffee，而不能是 Add some milk in coffee

问题 He asked Americans to wear a mask 还是 masks ? 还是二者（单复数）皆可？

He asked Americans to wear a mask for the first 100 days, promised to reopen schools and deliver on vaccines.At least 100 million covet vaccine shots into the arms of the American people in the first hundred days.A hundred million shots in the first hundred days. 上面“At least 100 million covet...