Did he have to help his sister the bed yesterday

问题描述:

Did he have to help his sister the bed yesterday
a.make b.makes c.making d.made

选a正确,考help sb (to)do sth,也就是说help 的宾补不定式不带to .但必须记住感官动词、使役动词的宾补不能带to,象feel have make 等.但这些动词的宾补要是变成主补就要带上to 了.例如,The landlord made the farmha...