there be 结构的肯定式为：There be + 主语+地点（时间）状语 There is a tree in front of the house.房子前有一棵树。
There be句型不一般，主语跟在be后边。变疑问，很简单，be须大写来提前； 变否定，也轻松，be后not记心中； 肯定句中用some, 否定、疑问any用。
1.不管作主语的名词有多少个，be动词的数只与第一个名词保持一致。如：There is a pen, two pencils and some books on the desk.书桌上有一枝钢笔、两枝铅笔和一些书。 练习六
1._____a TV(一台电视机) on the desk.2._____a basketball(一个篮球) in the playground. 3. _____some books(一些书) in the bag.4.______a story-book(一本故事书) on the table5. ____ a map of the world(一幅世界地图) on the wall.6. _____many children(很多小孩子) on the hill. 用“have,has”或“there is , there are” 填空
1. I________a good father and a good mother. 2. ____________a telephone on the desk. 3. He_________a book. 4. _____________a basketball in the playground. 5. She_________some pens. 6. They___________a good students.
7. What do you___________? 8. ______________a dog in the room房间里?
9. What does Mike___________? 10. ______________any books in the bag书包里? 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—gets
2.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 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。
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. 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：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。
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？
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 一般现在时专项练习：
二、用be（am,is,are）动词的适当形式填空。
1. I ______ a student. You ______ a teacher.2. She______ my friend.
3. ______ you Li Fen ? No, I______ not. 4. ______ Mr. green very busy? Yes, he ______. 5. Mike ______ very interesting .6. You and I ______ good friends. 7. His friends ______ very funny.8. The twins ______ very happy 三、一般现在时：用括号内动词的适当形式填空。
1. He他 often _____ ___(have) dinner at home. 2. Daniel and Tommy丹尼尔和汤米 __ _____(be) in Class One.
3. We 我们____ ___(not watch) TV on Monday. 4. Nick尼克 ___ ____(not go) to the zoo on Sunday.
5. ___ __ they ____ ___(like) the World Cup? 6. What _______they often _______(do) on Saturdays?7. _______ your parents _______(read) newspapers every day? 8. The girl _______(teach) us English on Sundays.9. She and _____ ___(take) a walk together every evening. 10. There ________(be) some water in the bottle.11. Mike ____ ___(like) cooking. 12.She ___ ____(go) to school from Monday to Friday.
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