Module 4 Life in the future-2020-2021学年最新外研版七年级下册英语各模块知识点精讲

Module 4 Life in the future 词法精析 1. need意为“需要”，既可用作实义动词，也可用作情态动词。 need用作实义动词时，它的单数第三人称形式为needs，后面可跟名词、代词、带to的不定式等作宾语。如： The boy doesn’t need help. The book is useful. We need it. He needs to work hard. need用作情态动词时，后面跟动词原形。如: They needn’t water the flower again. —Need he come here now?  —No, he needn’t. / Yes, he must. 2. In twenty year’s time, maybe there won’t be any schools! 二十年之后，也许一所学校都没有了! “in + 一段时间”表示“一段时间之后”，常用于将来时。可以用 how soon 来提问。如: — How soon will you be back? 你多久回来？ — In a week. 一个月之后。 3. They can ask their teachers questions by Internet, telephone or email. 他们可以通过互联网、电话或电子邮件向老师提问。 by表示方式，意思是“用……，靠……，通过……”。如: Send it by air mail. 用航空邮件寄吧。 They want to travel by train. 他们想坐火车旅行。 4. Computer won’t be able to do that. 计算机无法胜任。 be able to的意思是“能够，会，胜任”。相当于 can, 但是可以用于更多的时态中。如： I’m able to swim. = I can swim. 我会游泳。 They will be able to tell you the news soon. = They can tell you the news soon. 他们很快就能告诉你这个消息了。 Mary was able to ride a bike w