1.Sentences of this kind need improving.
2.Roger set out to improve himself in Spanish.
improve本身既可以做vt.也可以做vi.,这时有不定式和动词ing形式(至于动名词是动词作名词用,是另一个意思和ing不是一个意思)
improve后接名词...也可以做不及物动词不接名词
1.Sentences of this kind need improving.
2.Roger set out to improve himself in Spanish.
improve本身既可以做vt.也可以做vi.,这时有不定式和动词ing形式(至于动名词是动词作名词用,是另一个意思和ing不是一个意思)
improve后接名词...也可以做不及物动词不接名词