2 . have some trouble with sth./in doing sth.在……方面有困难
得知你在交友方面有困难我很遗憾。
I’m sorry to hear that you’re ________your friends.

3 . It was the first time that sb. had done sth. 这是某人第一次做某事
这是他第二次参与怎样解决这个问题的讨论。
It was the second time that he ________about how to deal with the problem.

4 . find it＋adj.＋to do sth.中it为形式宾语，动词不定式是真正的宾语
我们发现在现代社会学习一门外语是很有必要的。
We ________ a foreign language in modern society.

5 . it’s...that...强调句型
是因为天气不好足球赛被推迟了。
________the football match was put off.