1、 how 引导的感叹句
2、 花费 spend … on sth、 / doing sth、 …
3、 宾语从句:我认为，…… / 我认为……不 I think / I don't think that …
4、 Since + 主语+ 过去式， 主语 + 现在完成式。
5、It is commonly/generally/widely/ believed /held/accepted/recognized that…它通常是认为…
6、There is a long-running debate as to whether…有一个长期运行的辩论，是否…
7、A lot of people seem to think that…
8、It is commonly believed that… / It is a common belief that…
9、 Since + 主语+ 过去式， 主语 + 现在完成式。
10、Before giving my opinion, I think it is essential to look at the argument of both sides、在给出我的观点之前，我想有必要看看双方的论据。
11、Many people insist that…
12、 宾语从句:我认为，…… / 我认为……不 I think / I don't think that …
13、Along with the development of…， more and more…随着……的发展，越来越多…
14、As far as I am concerned, I completely agree with the former/ the latter、就我而言，我完全同意前者/后者。
15、 how 引导的感叹句