一道语法题,高手帮忙

来源:百度知道 编辑:UC知道 时间:2024/05/09 11:26:10
10. Millions of Americans flock to their drugstores to buy vitamins and minerals, that these pills can help prevent serious illnesses.
A. convincing B. convinced
C. to convince D. to be convinced
选哪个,再有想问问,题中的help后能加preventing 吗? 还是只能加原型,我记得可加to do 的.
空在that 前.

A 现在分词表伴随
B排除,因为如果选B出现两个谓语动词且无and连接
C,D不选因为那个逗号

help (to) do sth. to 可以省略
sb. can't help doing sth. 忍不住做某事

A
状语从句。
can't help doing sth. 禁不住做某事
help 后直接加动词原型。

B. convinced
sb is convinced that...
-------------------------------不可以加preventing help后面加原形或者不定式
can't help doing情不自禁做某事

答案是C.题中help后不能加preventing.

要填的空在哪里。。。

A
伴随状语.

很容易的.很多人争先恐后的去买 维他命 的(同时),深信不疑.....

help后面 可以加do,也可以加to do .
一般用help sb do sth,
help sb to do sb ,都对.