五年级英语上册第三单元句型及语法知识

五年级英语上册第三单元句型及语法知识

　　上学期间，很多人都经常追着老师们要知识点吧，知识点就是学习的重点。掌握知识点有助于大家更好的学习。下面是小编为大家整理的五年级英语上册第三单元句型及语法知识，希望能够帮助到大家。

　　五年级英语上册第三单元句型及语法知识 篇1

　　关于一般过去时的语法：

　　1、一般过去时表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语连用。一般过去时也表示过去经常或反复发生的动作感谢。

　　2、Be动词在一般过去时中的变化：

　　⑴am和is在一般过去时中变为was。(wasnot=wasn’t)

　　⑵are在一般过去时中变为were。(werenot=weren’t)

　　⑶带有was或were的句子，其否定、疑问的变化和is, am,are一样，即否定句在was或were后加not，一般疑问句把was或were调到句首。

　　3、句中没有be动词的一般过去时的句子否定句：didn’t +动词原形，如：Jim didn’t go home yesterday.一般疑问句：在句首加did，句子中的动词过去式变回原形。如：Did Jim go home yesterday?特殊疑问句：

　　⑴疑问词+did+主语+动词原形?如：What did Jim do yesterday?

　　⑵疑问词当主语时：疑问词+动词过去式?如：Whowent to home yesterday?

　　一般现在时语法解析：

　　1、经常性或习惯性的动作，常与表示频度的时间状语连用。

　　时间状语：every…, sometimes, at…, on Sunday

　　I leave home for school at 7 every morning.

　　2、客观真理，客观存在，科学事实。

　　The earth moves around the sun.

　　Shanghai lies in the east of China.

　　3、表示格言或警句中。

　　Pride goes before a fall.骄者必败。

　　注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。

　　例：Columbus proved that the earth is round..

　　4、现在时刻的状态、能力、性格、个性。

　　I don't want so much.

　　Ann Wang writes good English but does not speak well.

　　【比较】

　　1、Now I put the sugar in the cup.

　　2、I am doing my homework now.

　　现在进行时：表示现在正在进行的动作。

　　构成：主语+be动词+动词的现在分词+其它成分

　　We are having lunch.

　　He is reading a book.

　　The dog is running after a cat.

　　The boys are swimming across the river.

　　变疑问句将be动词移到句首

　　Are we having lunch?

　　Is he reading a book?

　　Is the dog running after a cat?

　　Are the boys swimming across the river?

　　变否定句在be动词后面加not

　　We are not having lunch.

　　He is not reading a book.

　　The dog is not running after a cat.

　　The boys are swimming across the river.

　　特殊疑问句：what, which, how, where, who, etc.

　　疑问词+动词+主语+现在分词

　　What are you doing?

　　What is she doing?

　　What is the dog doing?

　　没有进行时的动词(必背)

　　表示状态，思想，感情和感觉的动词不能表示正在进行的动作

　　1.表示感觉，感官的词

　　see, hear, like, love, want,

　　2. have, has当拥有讲时没有进行时

　　五年级英语上册第三单元句型及语法知识 篇2

　　用法：在过去的时间里，两个动作中，发生在前的那个动作要用过去完成时。

　　结构：had+过去分词

　　After she had finished her homework, she went shopping.

　　They had sold the car before I asked the price.

　　The train had left before I arrived at the station.

　　After/before引导的时间状语从句放在句首要在句子后面加逗号，如果放在主句后则不用加。

　　1.变疑问句将助动词移到句首

　　Had she finished her homework?

　　2.变否定句在助动词后面加not

　　She hadn’t finished her homework.

　　3.肯定回答及否定回答

　　Yes, she had. No, she hadn’t.

　　4.特殊疑问句：

　　What had she done?

　　五年级英语上册第三单元句型及语法知识 篇3

　　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 beforeyesterday, 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

　　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，动词变为原型

　　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.

　　五年级英语上册第三单元句型及语法知识 篇4

　　表示将来将要发生的.动作，经常和tomorrow, next year, the day after tomorrow, the year afterthe next, in five hours' time, etc.表示将来的词联用。

　　结构：主语+助动词will+动词原形

　　I will go to America tomorrow.

　　The pilot will fly to Japan the month after the next.

　　Jack will move into his new house tomorrow morning.

　　变疑问句将助动词移到句首

　　Will you go to America tomorrow?

　　Will the pilot fly to Japan the month after the next?

　　Will Jack move into his new house tomorrow morning?

　　变否定句在助动词后面加not

　　I will not go to America tomorrow.

　　The pilot will not fly to Japan the month after the next.

　　Jack will not move into his new house tomorrow morning.

　　肯定回答及否定回答

　　Yes, I will. / No, I will not.

　　Yes, he/she will. / No, he/she will not.

　　Yes, he will. / No, he will not.

　　特殊疑问句

　　What will you do?

　　五年级英语上册第三单元句型及语法知识 篇5

　　句子的主谓宾

　　[1]Therebe句型，接真正主语，介词短语放后面，这儿有什么东西在什么地方

　　①这儿有十支铅笔在蓝色的盒子里。Therearetenpencilsinthebluebox.

　　②这儿有足够的铅笔。Thereareenoughpencils.

　　③这儿有很多的书在桌子上。Therearemanybooksonthedesk.

　　④这儿有一台电脑在我的房间里。Thereisacomputerinmyroom.

　　⑤这儿有足够的T裇衫给孩子们。ThereareenoughtheT-shirtsforchild.

　　⑥树上有许多小鸟。Therearemanybirdsinthetree.

　　⑦树上有许多香蕉。Therearemanybananasonthetree.(在树上长的果实用on)

　　五年级英语上册第三单元句型及语法知识 篇6

　　五年级英语上册第三单元句型及语法知识：介词

　　①in+月、年the morning/afternoon/evening/aweek表示时间

　　②on+具体某一天(几月几日)/某个假期(…Day)

　　③at+具体某点时间、某个假期(…Festival)/theweekend

　　①in…street

　　表示方位②on…road/left/right

　　③atthe…crossing/stop/某个具体的地点

　　①in the tree(不是树上长出来的)

　　②on the tree(树上原来自己长出来的)

　　表示时间：①ago(……以前)later(……以后)

　　②before(在……以前)after(在……以后)