数十位名师集结直播
好不好 听过才知道
听课
课程与PC端同步更新，充分利用零碎时间。做题
海量精选试题，想练就练，瞬间提分。答疑
海量精选试题，想练就练，瞬间提分。直播
名师大咖面对面，有问有大收获多。MBA英语语法辅导：动词不定式
could learn…
经常在这种结构中使用的动词有：consider,decide,discover,explain,find out,forget,hear,know,lea rn,observe,understand,wonder等。
编辑本段语法功能一、作主语
动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种：
(1)把不定式置于句首。如：
To get there by bike will take us half an hour.
(2)用it作形式主语，把真正的主语不定式置于句后，常用于下列句式中。如：
①It be 名词 to do
It's our duty to take good care of the old.
②It takes sb some time to do
How long did it take you to finish the work?
③It be 形容词 for sb to do
It is difficult for us to finish writing the composition in a quarter of an h
It is stupid of you to write down everything (that) the teacher says.
④It seems(appears) 形容词 to do
It seemed impossible to save money.
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