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高二英语语法解析:状语从句(3)


    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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