額,這是個復(fù)合句啊,所謂復(fù)合句就是倆個句子由一個連詞合并為一個復(fù)雜句.
因此,會分成主句和從句.而主從句分別有各自的主語,動詞.
這里Could you swim是主句
you were eight years old是從句,中間由when連接.
因此,could只能管前面的swim,管不了后面的be動詞
could you swim when you were eight years old
could you swim when you were eight years old
為什么這里的were不用原型,could不是情態(tài)動詞嗎?
為什么這里的were不用原型,could不是情態(tài)動詞嗎?
英語人氣：526 ℃時間：2020-03-06 10:51:43
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