最新关于be动词、情态动词和实义动词的区别

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1、关于关于 bebe 动词、情态动词和实义动词、情态动词和实义动词的区别动词的区别关于关于 bebe 动词、情态动词和实义动词的区别动词、情态动词和实义动词的区别到目前为止，我们主要学习了三类动词：到目前为止，我们主要学习了三类动词：bebe 动词、情态动词和动词、情态动词和实义动词。下面我们分别来讲一下它们得用法。实义动词。下面我们分别来讲一下它们得用法。1.1.bebe 动词属于系动词动词属于系动词,在句子中主要表现为三种形式：在句子中主要表现为三种形式：am isam is、areare。后面往往接形容词或名词做表语。如：后面往往接形容词或名词做表语。如：(1)I(1)I m young.

2、(youngm young.(young 形容词做表语形容词做表语)(2)He is a boy.(a boy(2)He is a boy.(a boy名词做表语名词做表语)含有含有 bebe 动词的句子在进行否认、疑问句变化时，都要在动词的句子在进行否认、疑问句变化时，都要在 bebe 动词上动词上变化。变化。(1)(1)变为否认句：变为否认句：主语主语+be+not+be+not+其他其他。即，直接在。即，直接在 bebe 后后 not.not.I Im a Chinese boy.(m a Chinese boy.(变为否认句变为否认句)You are good.(You are goo

3、d.(变为否认句变为否认句)He is strict with us.(He is strict with us.(变为否认句变为否认句)She is from America.(She is from America.(变为否认句变为否认句)以上四个句子中都含有以上四个句子中都含有 amam、is is 或或 areare，变否认句时，变否认句时，直接在直接在 amam、is is、areare 后面加上后面加上 notnot.即：即：I Im notm not a Chinese boy.a Chinese boy.YouYou are notare not good.good.HeHe

4、is notis not strict with us.strict with us.SheShe is notis not from America.from America.(2)(2)变为一般疑问句：变为一般疑问句：Be+Be+主语主语+其他？即把其他？即把 bebe 动词提到主语的前面。动词提到主语的前面。注意：当肯定句主语为第一人称注意：当肯定句主语为第一人称I I 和和 WeWe时，变一般疑问句要变为第时，变一般疑问句要变为第2 2二人称，二人称，bebe 动词也要相应的变为动词也要相应的变为 are.are.同样肯定句中的同样肯定句中的 mymy 和和 ourour 也也要变为要

5、变为 your.your.I amI am a boy.(a boy.(变为一般疑问句变为一般疑问句)Are youAre you a student?a student?We areWe are good friends.(good friends.(变为一般疑问句变为一般疑问句)Are youAre you good friends?good friends?She isShe is from America.(from America.(变为一般疑问句变为一般疑问句)Is sheIs she from America?from America?He isHe is strict with

6、 us.(strict with us.(变为一般疑问句变为一般疑问句)Is heIs he strict with us?strict with us?(3)(3)变特殊疑问句：变特殊疑问句：一般的要求为一般的要求为“对划线局部提问，“对划线局部提问，即用即用特殊疑特殊疑问词代替划线的局部，后接省略划线局部的一般疑问句问词代替划线的局部，后接省略划线局部的一般疑问句一般不再一般不再出现划线局部出现划线局部。如：。如：I Im m well.well.对划线局部提问对划线局部提问HowHoware youare you?She isShe is from America.from Americ

7、a.对划线局部提问对划线局部提问WhereWhereis sheis she from?from?2.2.关于情态动词：初中我们常用的情态动词主要有：关于情态动词：初中我们常用的情态动词主要有：cancan、may may、mustmust、needneed。我们这里主要以我们这里主要以 cancan 为例来说明情态动词的用法。为例来说明情态动词的用法。情态动词后面必须接动词的原形情态动词后面必须接动词的原形。情态动词。情态动词 cancan 的用法类似于的用法类似于bebe 动词。动词。不管主语为第几人称不管主语为第几人称，变否认就是在，变否认就是在 cancan 后加后加 not.not.

8、3 33.3.4 44.4.数；当主语为非第三人称单数数；当主语为非第三人称单数I,you(I,you(你你),we,you(),we,you(你们你们)they)they时，实时，实义动词要用动词的原形义动词要用动词的原形。而在变否认句和疑问句时，不能直接在而在变否认句和疑问句时，不能直接在动词上变，而是要借助另一类动词：助动词动词上变，而是要借助另一类动词：助动词 dodo、doesdoes。1 1肯定句：肯定句：I have a blue book.I have a blue book.He has a brother.He has a brother.She wants to be a

9、 teacher.She wants to be a teacher.They like to play basketball.They like to play basketball.(2)(2)否认句：否认句：主语主语+don+don t/doesnt/doesn t+t+动词原形动词原形。其中其中 do/doesdo/does 为助动词，为助动词，是来帮助实义动词构成否认或疑问句的，但是来帮助实义动词构成否认或疑问句的，但加了加了do/doesdo/does 后，其后面的动词必须用动词原形。后，其后面的动词必须用动词原形。I I havehave a blue book.a blue b

10、ook.变为否认句变为否认句I I dondon t havet have a blue book.a blue book.HeHe hashas a brother.a brother.变为否认句变为否认句HeHe doesndoesn t havet have SheShe wantswants to be a teacher.to be a teacher.变为否认句变为否认句SheShe doesndoesn t wantt want to be a teacher.to be a teacher.TheyThey likelike to play basketball.to play

11、 basketball.变为否认句变为否认句TheyThey dondon t liket like to play basketball.to play basketball.(3)(3)一般疑问句：一般疑问句：Do/DoesDo/Does+主语主语+动词原形动词原形+其他？句中加了其他？句中加了do/doesdo/does 后，其后面的动词还是必须用动词原形。后，其后面的动词还是必须用动词原形。5 5 I I havehave a blue book.(a blue book.(变为一般疑问句变为一般疑问句)DoDo you you havehave a blue book?a blue

12、book?HeHe hashas a brother.(a brother.(变为一般疑问句变为一般疑问句)DoesDoes he he havehave a brother?a brother?MyMy brotherbrother doesdoes hishis homeworkhomework beforebefore supper.supper.(变为一般疑问变为一般疑问句句)DoesDoes your brother your brotherdodo his homework before supper?his homework before supper?SheShe wantsw

13、ants to be a teacher.(to be a teacher.(变为一般疑问句变为一般疑问句)DoesDoes she she wantwant to be a teacher?to be a teacher?TheyThey likelike to play basketball.(to play basketball.(变为一般疑问句变为一般疑问句)DoDo they they like like to play basketball?to play basketball?(4)(4)特殊疑问句：特殊疑问词特殊疑问句：特殊疑问词+一般疑问句？一般疑问句？Your sister

14、Your sister likes likes English best because it English best because it s interesting.(s interesting.(对划线局对划线局部提问部提问)WhyWhy doesdoes your sister your sisterlikelike English best?English best?HeHe doesdoes his homework before supper.(his homework before supper.(对划线局部提问对划线局部提问)WhenWhen doesdoes he he

15、dodo his homework?his homework?注意：当含有注意：当含有 andand 引导的短语在句中做谓语或宾语，我们把这类引导的短语在句中做谓语或宾语，我们把这类句子变否认句时，必须把句子变否认句时，必须把 andand 变为变为 or.or.如：如：(1)He can swim and dance.(1)He can swim and dance.变为否认句变为否认句He canHe can t swim or dance.t swim or dance.(2)My father likes English and math.(2)My father likes English and math.变为否认句变为否认句6 6My father doesMy father doesnn t like English or math.t like English or math.7 7