高二英语人教版选修六第三单元语法讲解 +答案

Book6 Unit3 A healthy life 语法：it 用法 一、代词 1. 人称代词 it 用来指代上文所提到的事物，或代替整个句子或该句中谓语部分所表示的意思: ①---What do you think of the movie? ---It’s one of the best movies that I’ve seen. ②You saved my life; I’ll never forget it. ③Tom’s mother kept telling him that he should work harder, but it didn’t help. 2. 指代婴儿或儿童;在不清楚某人性别时,也可使用 it,尤其在问答的形式中更为常见.例如: ①---Who’s the lovely baby? ---It’s Mr. Black’s. ②---Look, someone is coming. Who can it be? ---It may be the headmaster. 1)I was cooking in the kitchen when someone knocked at the door. ___ was my close friend, Lisa. 3. 还可以替代指示代词 this 或 that. ---What is that? ---It is his dictionary. 2)This is the first time that I have come here, ?(反义疑问句) 4. 用来表示时间, 天气, 气候, 距离, 温度, 环境, 季节, 价钱, 状况，次数等。 ①It's awful—I've got so much work I don't know where to start.（笼统状况） ②How is it going? ③It was very noisy outside now.(表示环境) 3) was a sunny day. Now__ was eight o’clock. They decided to go for a walk to the park, though __ _was two miles away. ___ was so com