题目

1.we must do something to ______the roof falling in.
A.prevent B.protect C.defend D.keep
解释说keep .from doing sth.的from不能省略.换言之prevent .from doing sth.的from可以省略了,那stop .from doing sth.和protect .from sth.的from可以省略吗?
2.you didn’t reach the required level,______,you faild in the diving test.
A.in another word B.that is to say in other words C that is
选C 请问有没有A项的表达?那改成in other words 是不是对的?
帮我说说第一问中哪些词组的from是可以省的

提问时间：2021-03-02

答案

keep .from..from不能省略,后面加 所要防止发生的动作如果省略了,就变成keep.,那就是 保持 的意思,保持屋顶掉下来?不对首先,没有in another word这样的说法that is to say=in other words=换句话说,也就是说 的意思t...