般现在时中的第三人称单数形式在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式,形后加-s或-es。
（一）什么是一般现在时？一般现在时的基本用法有哪些呢？【一般现在时的功能】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。
标志词(时间状语)：always, every week (day, year, month …)，once a week, every …,sometimes, at …,on Sun day uausllyoften,never,hardly.........3. 表示客观现实。
如：The earth goes around the sun.地球绕着太阳转。
（二）哪些主语是第三人称单数？现归纳总结如下：、单个人名、地名或称呼作主语；是第三人称单数。
如：①Han Mei looks like her mother. 韩梅看起来像她的母亲。
②Beiji ng is in Chi na. 北京在中国。
即常在动词原人称代词he, she, itHe likes watch ing TV. he has lunch at twelve. It looks like a cat. 是第三人称单数。
如：他喜欢看电视。
她十二点吃午餐。
它看起来像只猫。
③Uncle Wang ofte n makes cakes. 王叔叔经常做蛋糕。
① A horse is a useful animal.四、不定代词 someone, somebody, nobody, everything, something that 作主语时，是第三人称单数。
如：① Everyone is here. 大家到齐了。
② There is something wrong with the watch.③ This is a pen. 这是一支钢笔。
除上述规律外，还应注意下面三点：1. 动词 have ，遇到主语是第三人称单数时，要用 has ； 动词 be is 。
2. 含有动词第三人称单数形式的句子变否定句时，要用 doesn't + to school at six in themorning.（变否定句）He does n't go to school 3. 对含有动词第三人称单数形式的句子提问时，要用助动词 does ，如：She goes home at five三、单数可数名词或 "this / that / the+单数可数名词 " 作主语时，是第三人称单数。
如：② This book is yours.这本书是你的。
③ That car is red.那辆小汽车是红色的。
④ The cat is Lucy's.这只猫是露茜的。
④ That is an eraser.那是一块橡皮擦。
五、不可数名词作主语时为第三人称单数。
如： ① The milk is in the glass. 牛奶在玻璃杯里。
② The bread is very small. 那面包很小。
六、当数字或字母作主语时，看作第三人称单数。
如： ①"6" is a lucky number. "6" 是个吉利数字。
② "I" is a letter. "I"是个字母。
马是有用的动物。
等及指示代词 this,这块手表有毛病。
的第三人称单数形式是 动词原形，如： He goes at six inthe morning.every day.（对划线部分提问）宀When / What time does she go home every day?（三）含有动词第三人称单数形式的句子变否定句和疑问时怎样变？【注意：】只要句子中出现do, does,don 't,doesn ' t, 句子中原来的实意动词要用原形例如：He likes即ples.（改成否定句）He doesn ' t likes apples 。
（错）He doesn't like apples 。
（对）A 否定句：（1）当主语是第一，二或复数时，主语+ don't + 动词原形（+其它）。
如：I don't like bread.（2）当主语为第三人称单数时，要用doesn't 构成否定句。
如：He doesn't often play.B 一般疑问句：（1）当主语是第一，二或复数时，Do +主语+动词原形+其它。
如：Do you often play football?- Yes, I do. / No, I don't.（2）当主语为第三人称单数时，要用does 构成一般疑问句。
如：- Does she go to work by bike?- Yes, she does. / No, she doesn't.C特殊疑问句：疑问词+—般疑问句。
如：How does your father go to work?（四）一般现在时 -- 动词第三人称单数形式构成规则（一般现在时中主语时第三人称1大多数动词在词尾加“ S”如：① stop —stops make —makes read —reads play —plays [z]2、以辅音字母加“ y”结尾的，要先将“ y”变为“ i ”，然后在加“ es”读[iz]女口：fly —flies carry —carries study —studies worry —worries3、以“ s, x, ch, sh ”结尾的，在词尾加“ es”，发音为如：teach —teaches watch —watchesgo-- make--4、 以“ o ”结尾的动词，加“ es ”，如：go － goes do － does 5、 以不发音字母“ e ”结尾的开音节词，加“ s ”女口： close — closes [iz] 6、特殊： ①.be 动词包括：am is , are 。
第三人称单数用is ;过去式为was ;复数用are ，过去式为囤.动词have ，遇到主语是第三人称单数时， 要用has ;动词be 的第三人称单数形式 were.is。
五）巩固练习题：、 写出下列动词的第三人称单数形式：sit- die--guess- go--rush- touch--reach- brush--fly-say--copy-run--do-live--enjoy--wish--Tie-buy-- fix-cry-have-play--teach--study--drink-stay--look-- carry--come-- watch--plant-- flydo--二、用括号内动词的适当形式填空。
1. He often _____ (have) dinner at home.2. Daniel and Tommy _______ (be) in Class One.3. We ______ (not watch) TV on Monday.4. Nick ______ (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 I ______ (take) a walk together every evening.10. There ______ (be) some water in the bottle.11. Mike _____ (like) cooking.12. They _____ (have) the same hobby.13. My aunt ____ (look) after her baby carefully.14. You always _____ (do) your homework well.15. I _____ (be) ill. I ' m staying in bed.16. She _____ (go) to school from Monday to Friday.17. Liu Tao _____ (do) not like PE.18. The child often _____ (watch) TV in the evening.19. Su Hai and Su Yang ____ (have) eight lessons this term.20. －What day _____ (be) it today?－It ' s Saturday三、改错(划出错误的地方，将正确的写在横线上)1. Is your brother speak English? ________________2. Does he likes going fishing? ________________3. He likes play games after class. _______________4. Mr. Wu teachs us English. ________________5. She don ' t do her homework on Sundays. __________________练习题练习一、写出下列动词的第三人称单数drink ___ go ____ stay ___ make ___ look___have ___ pass ____ c arry ___ come ___ watch ____ p lant ____ fly ___ study __ brush___do __ teach ____ m eet _____ bring___练习二、将括号里动词的适当形式填入横线上。
1. I _______ in the corridors. (walk)2. He ________ in the corridors. (run)3. She _________ her face once a day. (wash)4. They __________ their teeth once a day. (brush)5. You _________ up your clothes once a day. (hang)6. We _________ our home work once a day. (finish)7. He __________ rubbish in the classroom. (throw)8. She ___________ rubbish on the floor. (throw)9. I ____________ rubbish in the bin. (throw)10. They _________ the table once a day. (set)11. Peter never ________ in the corridors. (run)12. Mary usually _______ the table. (set)13. Pat and Ken _______ the plants in the morning. (water)14. The boy _________ his hair once a day. (comb)15. Miss Cheng ________ TV at home. (watch)16. My sister ________ his schoolbag once a day. (pack)17. My mother _______ dinner for me. (cook)18. My parents _______ the house at Chinese New Year. (clean)19. My teachers _______ us some gifts. (give)20. My friends ________ the table with me. (set)练习三、选择正确的单词填到括号里。