十一、一般现在时基本用法介绍般现在时的功能1.表示事物或人物的特征、状态。

如：The sky is blue.天空是蓝色的。

2.表示经常性或习惯性的动作。

如：I get up at six every day.我每天六点起床。

3.表示客观现实。

如：The earth goes around the sun.地球绕着太阳转。

4表示经常发生的动作或事情，通常用every Sunday每个星期天once a week一周一次 every year.每年always总是usually通常often经常 sometimes有时 never决不every day每天 every week 每周every每个, at....在几点钟 .主语是第三人称单数时谓语动词也要变成第三人称单数谓语动词+s+es 的变化规则（以下单词是碰到主语是第三人称单数它、他、她才加s或es）1.一般情况下，直接加-s，如：cook-cooks,like-likes, talk-talks ,swim-swims. want-wants， work-works， know-knows， help-helps，get-gets2.以s. x. sh. ch. 结尾，加-es，如：guess-guesses猜, wash-washes洗, watch-watches看, catch-catches接住，miss-misses 思念,pass-passes通过,finish-finishes完成,cross-crosses 穿过fish-fishes钓鱼，teach-teaches教brush-brushes刷.3.以"辅音字母+y"结尾，变y为i, 再加-es，如：study-studies学习worry-worryies 担心try-tryies尝试,copy-copies模仿. fly-flies放（飞），y前是元音字母的直接加-s :buy-buys买,enjoy-enjoys 享用,play-plays 打（球）玩stay-stays 停留4.不规则变化have的第三人称单数是-has有do的第三人称单数是-does做go的第三人称单数goes去。

一般现在时的构成：1. be(am,is,are)动词：主语+be(am,is,are)+（名词）其它（不能是其它动词）。

①I我+am+(名词)其它（不能是其它动词）如：I am a boy.我是一个男孩。

I am a teacher我是老师②第三人称单数+is+(名词)其它. He is a teacher.他是一位老师. Amy is a girl.艾米是一个女孩.③复数(you你)+are+(名词)其它You are a girl你是一个女孩. They are students他们是学生2.行为动词：主语+行为动词(+其它)。

①主语是（第一人称(I我）、第二人称(you你)和复数）+行为动词原形（不加s或es）+其它We study English.我们学习英语。

I like dogs我喜欢狗。

You like cats你喜欢猫.②主语是第三人称单数（he,他she她,it它）+行为动词+（s或es或不规则变化的has有does做goes去）如：Mary likes Chinese.玛丽喜欢汉语。

It likes fish.它喜欢鱼He drives bus.他开公共汽车She goes to school.她去学校.She has a book。

她有一本书.Mike does his homework。

迈克做作业.3.情态动词can能，会:主语+can+动词原形如：I can swim.我会游泳.He can play ball.他会打球.一般现在时的变化1. be动词的变化。

肯定句：主语（人称）+be(am is are)+ 名词）其它如：He is a worker.他是工人否定句：主语（人称）+ be(am is are) + not（n't）+（名词）其它We aren't students.我们不是学生.一般疑问句：Be( Is，Are) +主语（人称）+（名词）其它。

如：Are you a student? 你是学生吗？Yes. I am. 是的，我是 No, I'm not.不，我不是。

Is she a girl?她是一个女孩吗？Yes,she is是的，她是/No,she isn't不，她不是特殊疑问句：疑问词+一般疑问句结构。

如：Where is my bike?我的自行车在哪里？Who are you?你是谁？What am I?我是干什么的？2.行为动词的变化。

否定句：主语+ don't( doesn't ) +动词原形(+其它)。

如：I don't like bread.我不喜欢面包.They don't go to school.他们不去学校.当主语为第三人称单数时，要用doesn't构成否定句动词要原形。

如：He often plays. 他经常玩.　He doesn't often play.他不经常玩. She doesn't do her homework她不做作业.一般疑问句：Do( Does ) +主语+动词原形+其它。

如：有do和does出现所有动词要原形Do you often play football?你经常踢球吗？Yes, I do.是的我经常踢/ No, I don't.不，我不经常踢。

当主语为第三人称单数时，要用does构成一般疑问句。

如：she goes to work by bike她骑自行车去上班.Does she go to work by bike? 她骑自行车去上班吗？Yes, she does. / No, she doesn't.特殊疑问句：疑问词+一般疑问句结构。

如：How does your father go to work?你的父亲怎样去上班？3. 情态动词can动词的变化否定句：主语+(can't)+can not+其它.如：I can't swim.我不会游He can not sing他不会唱歌。

一般疑问句： Can +主语+其它如：Can you swim?Yes,I can\No,I can't特殊疑问句: 疑问词+一般疑问句.如： What can you see ? What can you hear ? What can you do？一、练习.写出下列动词的第三人称单数drink __ ______ go __ _____ stay ____ ____ make ________look_________ have_______ pass_ _____carry __ __come_______ watch______ plant_______ fly ________study___ ___brush_______do____ ____teach__ ____make fly come play swim call found spell take bring like run eatbuy speak sing draw get ask1、I am a teacher.我是一个老师。

疑问句:Are you a teacher?否定句:I am not a teacher.肯定回答：yes,I am否定回答:No,I am not. I（我）变为疑问句时要改为you（你）划线提问：（改为特殊疑问句）What are you?你是干什么的？特殊疑问句结构：疑问词(What)+一般疑问句2、We are girls.我们是女孩疑问句:Are you girls?否定句: We are not girls.肯定回答：yes,we are否定回答：N0,we are not. We（我们）变为疑问句时要改为you（你们）划线提问：（改为特殊疑问句）Who are girls? 特殊疑问句结构：疑问词(Who)+一般疑问句3、It is a cat.它是一只猫. 疑问句:Is it a cat?否定句: It isn't a cat.肯定回答:yes,it is否定回答:No,it isn't.划线提问：（改为特殊疑问句）What is it? 特殊疑问句结构：疑问词(What)+一般疑问句4、They are teachers. 他们是老师.疑问句：Are they teachers?否定句：They aren't teachers.肯定回答：yes,they are否定回答：No,they aren't划线提问：（改为特殊疑问句）What are they? 特殊疑问句结构：疑问词(What)+一般疑问句5、This is a cat.这是一只猫. 疑问句:Is this a cat?否定句: This isn't a cat.肯定回答:yes,it is否定回答:No,it isn't.划线提问：（改为特殊疑问句）What is this? 特殊疑问句结构：疑问词(What)+一般疑问句6、That is a cat.那是一只猫. 疑问句:Is that a cat?否定句: That isn't a cat.肯定回答:yes,it is否定回答:No,it isn't.划线提问：（改为特殊疑问句）What is that? 特殊疑问句结构：疑问词(What)+一般疑问句7、The dog is under the tree.这条狗在树下。

疑问句:Is the dog under the tree? 否定句: The dog isn't under the tree.肯定回答:yes,it is否定回答:No,it isn't.划线提问：（改为特殊疑问句）Where is the dog? 特殊疑问句结构：疑问词(Where)+一般疑问句8、Amy is a girl .艾米是一个女孩。

疑问句:Is Amy a girl? 否定句:Amy isn'ta girl肯定回答：Yes,she is. 否定回答:No,she isn't.9、Sam is boy.萨姆是男孩。

疑问句: Is Sam a boy? 否定句:Sam isn't a boy.肯定回答：Yes,he is. 否定回答:No,he isn't10、These are dogs.这些是狗. 疑问句:Are these dogs?否定句: These aren't dogs.肯定回答：yes,they are否定回答：No,they aren't划线提问：（改为特殊疑问句）What are these? 特殊疑问句结构：疑问词(What)+一般疑问句11、Those are pens.那些是钢笔. 疑问句：Are those pens?否定句：Those aren't pens.肯定回答：yes,they are否定回答：No,they aren't划线提问：（改为特殊疑问句）What are those? 特殊疑问句结构：疑问词(What)+一般疑问句12、Daming and Amy are good friends.大明和埃米是好朋友。