Only after he has acquired considerable facility in speaking _____to learn to read and write.

题目

Only after he has acquired considerable facility in speaking _____to learn to read and write.
A.he began B .will he begin C.did he begin D.must he begin
本题选B,为什么不选择C,D
C为什么不行，表示强调啊

答案

你好!我是英语师范学校毕业的,希望可以帮助到你哦!
首先,你需要理解这句话的意思.
这句话是说：只有在他在“说”上面习得相当多的能力后他才开始学习读与写.
这句话的考点是only放在句首要用倒装的用法.
only引导的从句是一句条件状语从句.这句话的“条件”是“has acquired considerable facility in speaking ”,注意,其中用的是现在完成时,那么,后面满足了这一“条件”后的“结果”就要用一般将来时表将来,所以要用will he begin.
这句话不是强调句,你混淆了强调句与倒装句了.
强调句的公式是：
It is +n./np(noun phrase) that /who +do sth.
that/who 前面的内容为整句话的强调成分.