哪些主语是第三人称单数? 现归纳总结如下：
一、人称代词he, she, it是第三人称单数。如：
He likes watching TV. 他喜欢看电视。
He has lunch at twelve. 他十二点吃午餐。
It looks like a cat. 它看起来像只猫。
二、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。
标志词（时间状语）： always, every week (day, year, month…),
once a week, every…, sometimes, at…, on Sunday uauslly often,never,hardly..........
②Beijing is in China. 北京在中国。
③Uncle Wang often makes cakes. 王叔叔经常做蛋糕。
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：
①A horse is a useful animal. 马是有用的动物。
②This book is yours. 这本书是你的。
③That car is red. 那辆小汽车是红色的。
④The cat is Lucy's. 这只猫是露茜的。
四、不定代词someone, somebody, nobody, everything, something，anything等及指示代词this, that作主语时，是第三人称单数。如：
①Everyone is here. 大家到齐了。
②There is something wrong with the watch. 这块手表有毛病。
③This is a pen. 这是一支钢笔。
④That 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：
①The milk is in the glass. 牛奶在玻璃杯里。
②The 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。
（3）一般现在时------动词第三人称单数形式构成规则
（一般现在时中主语是第三人称 ）
1、大多数动词在词尾加“S”如：
①stop－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] 如： fly－flies carry－carries study－studies worry－worries
3、以“s, x, ch, sh”结尾的，在词尾加“es”，发音为如： teach－teaches watch－watches
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” 如： 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were.
○2. 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is。
（四）巩固练习题：
一、 写出下列动词的第三人称单数形式：
sit-- guess-- die-- go--
rush-- reach-- touch-- brush--
fly-- copy-- say-- run--
do-- fix-- live-- cry--
enjoy-- have-- wish-- play--
Tie-- teach-- buy-- study--
drink-- go-- stay-- make-- look-- carry-- come-- watch--
plant-- fly -- do--
2、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. _________________
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