不定代词一定要放从句句首吗?
题目
不定代词一定要放从句句首吗?
He has three sons.All of them are doctor.
两个句子合成一个.
He has three sons,____________________.
是All of whom are doctor
还是 Whom all of are doctor?
改错：China has many islands，of them Taiwan is the largest.
答案
第一个.按正常语序来就行.没什么规定.看具体情况.把them改whom
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