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that ① 当先行词是指物的名词,关系词在句中作主语时,选that. This is a machine that can walk. ② 当先行词是指物的名词,关系词在句中作宾语时,选that. 另外,that可以省略。 I like the present (that) my father sent me. ③ 当先行词是指人的名词,关系词也可选用that=who The boy that/who is playing football on the play ground is my brother. (责任编辑:admin) |