it was not until 1920（ ）regular radio broadcasts began A.while B.when C.that D.since 解释和翻译

Question

如题所述

Answer 1

选B
这不是not until 的强调句，把it was ...that 去掉，句子是
not until 1920 regular radio broadcasts began ，少介词in,如果有in,则that

Answer 2

b 直到1920年 定时广播才开始运作

Answer 3

C追答

强调句型

汉义：直到1920年电台广播才开始。

不强调时的句子是：
Regular radio broadcast didn't begin until 1920.

not ... until ... 的句型在做成强调句时要注意否定词转移。

I didn't go to bed until my father came back. 直到我父亲回来我才睡觉。
It was not until my father came back that I went to bed.

谢谢好评

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