精选优质文档-倾情为你奉上重要知识点一不定式用法1不定式做主语 （to do sth）It is+ adj. +for sb. to do sthTo do sth is + adj.+ for sb.It is + adj. +of sb.to do sth.(表示品质，性格的形容词)It takes/ took sb +时间+ to do sth.It costs/ cost sb + 钱+ to do sth.例子 Its very common to raise money in Canadian.Its easy for you to learn English well.Its difficult to finish the work in a short time.Its very kind of you to help me.Its clever of you to work out the problem.It takes us a few days to get there by bi
