状语从句 when和before

学习 时间:2026-06-05 20:10:00 阅读:1612
状语从句 when和beforeShe was so absorbed in the book that she had read it for three hours _ she realized it. A.when B.until C.after D.before

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贤惠的钢笔

精明的翅膀

2026-06-05 20:10:00

efore表示“不知不觉,还没弄清就……”(常用于before sb。know/realize…)
用when则无法强调时间流逝的不知不觉性。
又如:Time passed quickly and three months went by before I knew it。时间飞快地流逝,不知不觉3个月过去了。

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  • 光亮的枕头
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    2026-06-05 20:10:00

    efore表示“不知不觉,还没弄清就……”(常用于before sb。know/realize…)用when则无法强调时间流逝的不知不觉性。又如:Time passed quickly and three months went by before I knew it。时间飞快地流逝,不知不觉3个月过去了。

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