高中英语主语从句It is uncertain ____ side effect the medicine will bring _英语解答

高中英语主语从句
It is uncertain ____ side effect the medicine will bring about,although about two thousand patients have taken it.A.that B.what 不要给我说about后面缺少成分,因为它的成分在前面,是side effect,也就是the medicine will bring about side effect,为什么不能选a?

人气：292 ℃　时间：2019-11-26 08:11:56

解答

若选择that,就成了it做形式主语that引导主语从句,that从句里面应该是陈述句,语序就应该如同你说的：the medicine will bring about side effect.而并非题干里面的语序.意思就成了“这种药会带来副作用这还不确定.”...