Only when he started to explain ____________ the reason for this.
问题描述:
Only when he started to explain ____________ the reason for this.
A.she realized B.did she realize C.she had realized D.had she
用的是什么语法?
D.had she realized 刚刚打漏了……
答
Only when he started to explain had she realized the reason for this.
选项D是正确的,从句是一般过去时,主句用过去完成时.only在句首时主句要用倒装形式.
翻译:只有他开始解释时,他才真正明白了这件事的原由了.