Before ------ （walk）across the road,you should look left and

学习时间:2026-04-02 17:30:37 阅读：5857

Before ______ （walk）across the road,you should look left and right.是用原型?

唠叨的大炮

2026-04-02 17:30:37

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walking 再问：为什麼要用“to”：it's good to do sth。再答： it只是个形式主语，没有具体意义，to do sth这个不定式短语才是句子的真正主语再问： he ____（受伤）his leg just now 再答： hurt