九年级英语第十单元主要重点语法 下册

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 01:59:10
九年级英语第十单元主要重点语法 下册

九年级英语第十单元主要重点语法 下册
九年级英语第十单元主要重点语法 下册

九年级英语第十单元主要重点语法 下册
Unit 10 By the time I got outside,the bus had already left.
本课语法重点
1.Past perfect Tense 过去完成时
构成:had+过去分词(had没有人称和数的变化)
过去完成时可以表示过去某一时刻或某一动作之前完成的动作或呈现的状态.也就是说发生在“过去的过去”.既然过去完成时的动作发生在过去某一时间之前,那么,使用过去完成时就必须先有这样一个过去的时间.
e.g.I had finished my homework before supper.我在晚饭前把作业做完了.
句中的supper既是过去某一时间,而had finished 这一动作就是在supper 之前完成的.如果只说I had finished my homework.听者会觉得难以理解.由此可见,过去完成时是个相对的时态,它不能离开过去的时间而独立存在.
e.g.By the end of that year Henry had collected more than one thousand foreign stamps.到那年年底,亨利已经收集了一千多张外国邮票.(过去时间是the end of that year)
e.g.When we got there,the football match had already started.当我们到那里时,足球比赛已经开始了.(过去时间是when从句)
动词过去分词的构成与一般过去式的构成相似,一般情况下在动词词尾加-ed,特殊动词须特殊记忆,如:have—had—had,get—got—gotten,begin—began—begun,leave—left—left,go—went—gone等.例如:
She had learnt 2000 English words by the end of last month.到上个月末,她已经学了2000个英语单词了.
I hadn’t learnt Japanese before I went to Japan.我去日本之前没学过日语.
注意:过去完成时的否定句和疑问句直接通过had的变化即可.
2.when 和by the time引导的时间状语从句
by the time 到…时候为止,指从过去某一点到,从句所示的时间为止,这一时间段.when当…时候,指过去的某一时间点.从句用一般现在时,主句为过去完成时.
eg.By the time she got up,her brother had already gone into the bathroom.到她起床的时候,她的弟弟已经去洗澡间了.
By the time she went outside,the bus had already gone.到她走到外面的时候,公共汽车已经走了.
When she got to school,she realized she had left her backpack at home.当她到学校的时候,她意识到她把书包放在家里了.
(在这句话中,过去的时间点为“到校”的时候,“她把书包放在家里”则发生在“过去的过去”.)
3.How to narrate past events.如何描述过去的事件
描述过去的事件,首要注意一点是时态.由于事情发生在过去,因此一定要用过去的某种时态.但如果是直接引语(如在双引号“”之内),则根据当时的情况来决定.表示过去的时态有:
(1)一般过去时:结构:动词的过去式
(2)过去进行时:结构:was / were +现在分词
(3)过去完成时:结构:had+过去分词
(4)过去将来时:结构:would+动词原形
请看例文1:
It was Sunday.I went to a pool to fish.I thought there must be some fish for me to catch.I held my fishing pole,waiting patiently.Suddently a big fish was caught.I was glad and put it into my little basket.Before long my sister came.Without a word she put back the fish into the water.I was astonished.I really thought she became mad.She ordered me to put down the fishing pole and led me to a place not far away.There stood a sign,reading “No fishing”.I realized that I was making a mistake.(注意观察文中时态的应用)
例2:请大声朗读Section A 3a,并找出其中用到的时态.
PS:在别人那贴的,我也不知道是不是你要的,有用的话就行.

Unit 10 By the time I got outside, the bus had already left.
本课语法重点
1. Past perfect Tense 过去完成时
构成:had+过去分词(had没有人称和数的变化)
过去完成时可以表示过去某一时刻或某一动作之前完成的动作或呈现的状态。也就是说发生在“过去的过去”。既然过去完成时...

全部展开

Unit 10 By the time I got outside, the bus had already left.
本课语法重点
1. Past perfect Tense 过去完成时
构成:had+过去分词(had没有人称和数的变化)
过去完成时可以表示过去某一时刻或某一动作之前完成的动作或呈现的状态。也就是说发生在“过去的过去”。既然过去完成时的动作发生在过去某一时间之前,那么,使用过去完成时就必须先有这样一个过去的时间。
e.g. I had finished my homework before supper. 我在晚饭前把作业做完了。
句中的supper既是过去某一时间,而had finished 这一动作就是在supper 之前完成的。如果只说I had finished my homework. 听者会觉得难以理解。由此可见,过去完成时是个相对的时态,它不能离开过去的时间而独立存在。
e.g. By the end of that year Henry had collected more than one thousand foreign stamps. 到那年年底,亨利已经收集了一千多张外国邮票。(过去时间是the end of that year)
e.g. When we got there, the football match had already started. 当我们到那里时,足球比赛已经开始了。(过去时间是when从句)
动词过去分词的构成与一般过去式的构成相似,一般情况下在动词词尾加-ed,特殊动词须特殊记忆,如:have—had—had,get—got—gotten,begin—began—begun,leave—left—left,go—went—gone等。例如:
She had learnt 2000 English words by the end of last month. 到上个月末,她已经学了2000个英语单词了。
I hadn’t learnt Japanese before I went to Japan. 我去日本之前没学过日语。
注意:过去完成时的否定句和疑问句直接通过had的变化即可。
2. when 和by the time引导的时间状语从句
by the time 到…时候为止,指从过去某一点到,从句所示的时间为止,这一时间段。when当…时候,指过去的某一时间点。从句用一般现在时,主句为过去完成时。
eg. By the time she got up, her brother had already gone into the bathroom. 到她起床的时候,她的弟弟已经去洗澡间了。
By the time she went outside, the bus had already gone. 到她走到外面的时候,公共汽车已经走了。
When she got to school, she realized she had left her backpack at home. 当她到学校的时候,她意识到她把书包放在家里了。
(在这句话中,过去的时间点为“到校”的时候,“她把书包放在家里”则发生在“过去的过去”。)
3. How to narrate past events. 如何描述过去的事件
描述过去的事件,首要注意一点是时态。由于事情发生在过去,因此一定要用过去的某种时态。但如果是直接引语(如在双引号“”之内),则根据当时的情况来决定。表示过去的时态有:
(1)一般过去时:结构:动词的过去式
(2)过去进行时:结构:was / were +现在分词
(3)过去完成时:结构:had+过去分词
(4)过去将来时:结构:would+动词原形
请看例文1:
It was Sunday. I went to a pool to fish. I thought there must be some fish for me to catch. I held my fishing pole, waiting patiently. Suddently a big fish was caught. I was glad and put it into my little basket. Before long my sister came. Without a word she put back the fish into the water. I was astonished. I really thought she became mad. She ordered me to put down the fishing pole and led me to a place not far away. There stood a sign, reading “No fishing”. I realized that I was making a mistake. (注意观察文中时态的应用)
例2:请大声朗读Section A 3a,并找出其中用到的时态。

PS:在别人那贴的,我也不知道是不是你要的,有用的话就行。。。赞同7|评论(1)

收起