状语从句 when和before

学习 时间:2026-04-02 17:29:49 阅读:9744
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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危机的帆布鞋

健忘的手套

2026-04-02 17:29:49

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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  • 醉熏的唇彩
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    2026-04-02 17:29:49

    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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