新概念2.60课1.we must be at station to meet her为什么要有一个be?2.we are late already..是否等于we are already late?
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新概念2.60课
1.we must be at station to meet her为什么要有一个be?
2.we are late already..是否等于we are already late?
must 等情态动词后要接动词原形.already做副词一般放句尾.