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be able to (送分拉)

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/11/05 21:48:56
be able to (送分拉)
e able to 能够
a.位于助动词后.
b.情态动词后.
c.表示过去某时刻动作时.
d.用于句首表示条件.
e.表示成功地做了某事时,只能用was/were able to,不能用could.
He was able to flee Europe before the war broke out.
= He managed to flee Europe before the war broke out.