i don't need __ a new dictionary because i bought this one year ago.为什么填to buy 而不是buy?
问题描述：
i don't need __ a new dictionary because i bought this one year ago.为什么填to buy 而不是buy?
There's a lot to do.we can't __ to waste ant time.中间为什么填afford 而不是want？
答
第一句：need是实意动词,因为它的否定形式用助动词don't了.need是实义的及物动词,后面不能用动词原形的,或用不定式形式,或用分词形式,但分词形式在意思上是表示被动的.所以这题只能用to buy. 第二句,want一般不用情...