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高二英语语法:状语从句讲解

[04-24 20:28:30]   来源:http://www.i3xuexi.com  高二英语知识讲解   阅读:9205

[导读] 语与主句主语一致(或虽不一致,是it),从句的谓语又包含动词be,就可省略从句中的“主语 + be”部分。 e.g. When (he was) still a boy of ten, he had to work day and night. If (you are) asked you may come in. If (it is) necessary I'll explain to you again. 3. 注意区分不同从句:引导的是什么从句,不仅要根据连词,还要根据句子结构和句意来判别。以where为例,能引导多种从句。 e.g. You are to find it where you left it.(地点状语从句) Tell me the address where he lives.(定语从句,句中有先行词) I don't know where he came from.(宾语从句) Where he has gone is not known yet.(主语从句) This place is where they once hid.(表语从句)上一页 [1] [2]

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    十、使用状语从句时要注意的几个问题

    1. 在时间和条件(有时也在方式、让步等)从句中,主句是一般将来时,从句通常用一般现在时表示将来。

    e.g. We'll go outing if it doesn't rain tomorrow.

    I'll write to you as soon as I get to Shanghai.

    2. 有些时间、地点、条件、方式或让步从句,如果从句的主语与主句主语一致(或虽不一致,是it),从句的谓语又包含动词be,就可省略从句中的“主语 + be”部分。

    e.g. When (he was) still a boy of ten, he had to work day and night.

    If (you are) asked you may come in.

    If (it is) necessary I'll explain to you again.

    3. 注意区分不同从句:引导的是什么从句,不仅要根据连词,还要根据句子结构和句意来判别。以where为例,能引导多种从句。

    e.g. You are to find it where you left it.(地点状语从句)

    Tell me the address where he lives.(定语从句,句中有先行词)

    I don't know where he came from.(宾语从句)

    Where he has gone is not known yet.(主语从句)

    This place is where they once hid.(表语从句)

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