八年级英语Writing and More practice语法重难点讲解

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　　对这类问题的肯定回答有：sure， certainly， 或 of course.
　　
二. 重点词组：
　1. at that moment 是一个介词短语，作时间状语，表示：就在那时，相当于just then， 用于一般过去时或过去进行时。
　　I heard a scream at that moment . 就在那时，我听到一声尖叫。
　　注意它与at the moment 的区别. at the moment 表示：此时，目前，用于一般现在时或现在进行时。
　　I have nothing to do at the moment. 现在我无事可干。
　2. lie in bed表示：人躺在床上， 卧床休息， bed 前面不用定冠词the .
　　e. g.： Tom hurts his leg. He is lying in bed. 汤姆腿伤了，正在卧床休息. (lying 是lie 的现在分词)
　　表示： 躺在......上， 通常用lie on +名词，该名词前面要用定冠词the.
　　Don‘t lie on the street. 别躺在街上。
　　Lying on the beach is fun. 躺在沙滩上很好玩。
　3. as soon as possible. 是一个短语，表示尽快地，常在句中作状语。
　　e. g.： She wants to buy a new cell phone as soon as possible. 她想尽快买一部新手机。

三. 一般过去时
　　表示过去发生的动作或事件， 常和表示过去的时间状语连用，如yesterday， last night， the day before yesterday， 3 days ago，
　　含有be动词的句子， 将动词变为过去式，am， is的过去式为was，are的过去式为were
　　I was at the butcher‘s.
　　You were a student a year ago.
　　The teacher was very beautiful ten years ago.
　　★变疑问句将be动词移动到句首
　　Were you at the butcher‘s?
　　Were you a student a year ago?
　　Was the teacher very beautiful ten years ago?
　　★变否定句在be动词后面加not
　　I was not at the butcher‘s.
　　You were not a student a year ago.
　　The teacher was not very beautiful ten years ago.
　　★肯定回答/否定回答
　　Yes， I was. No， I was not.
　　Yes， you were. No， you were not.
　　Yes， he/she was. No， he/she was not.
　　★特殊疑问句：
　　What did you do?
　　(必背)
　　不含有be动词的句子，将动词变为过去式，动词过去式构成见附录
　　I finished my homework yesterday.
　　The boy went to a restaurant.
　　The Sawyers lived at King Street a year ago.
　　★变疑问句在句首加did，动词变为原形
　　Did you finish your homework yesterday?
　　Did the boy go to a restaurant?
　　Did the Sawyers live at King Street a year ago?
　　★变否定句在主语和动词之间加did not
　　I did not finish my homework yesterday.
　　The boy did not go to a restaurant.
　　The Sawyers did not live at King Street a year ago.
　　★肯定回答及否定回答
　　Yes， I did. No， I didn‘t.
　　Yes， he did. No， he didn‘t.
　　Yes， they did. No， they did not.


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八年级英语Writing and More practice语法重难点讲解