一般現(xiàn)在時(shí)第三人稱單數(shù)形式用法+練習(xí)

一般現(xiàn)在時(shí)中的第三人稱單數(shù)形式在一般現(xiàn)在時(shí)中，當(dāng)主語是第三人稱單數(shù)時(shí)，謂語動(dòng)詞要用第三人稱單數(shù)形式，即常在動(dòng)詞原形后加-s或-es。標(biāo)志詞（時(shí)間狀語）： always, every week (day, year, month), once a week, every, sometimes, at, on Sunday uauslly often,never,hardly.（一） 什么是一般現(xiàn)在時(shí)？一般現(xiàn)在時(shí)的基本用法有哪些呢？【一般現(xiàn)在時(shí)的功能】1.表示事物或人物的特征、狀態(tài)。如：The sky is blue.天空是藍(lán)色的。2.表示經(jīng)常性或習(xí)慣性的動(dòng)作。如：I get up at six every day.我每天六點(diǎn)起床。 3.表示客觀現(xiàn)實(shí)。如：The earth goes around the sun.地球繞著太陽轉(zhuǎn)。（二）哪些主語是第三人稱單數(shù)? 現(xiàn)歸納總結(jié)如下：一、人稱代詞he, she, it是第三人稱單數(shù)。如：He likes watching TV. 他喜歡看電視。She has lunch at twelve. 她十二點(diǎn)吃午餐。It looks like a cat. 它看起來像只貓。二、單個(gè)人名、地名或稱呼作主語；是第三人稱單數(shù)。如：Tom looks like her mother. 韓梅看起來像她的母親。Beijing is in China. 北京在中國。Uncle Wang often makes cakes. 王叔叔經(jīng)常做蛋糕。三、單數(shù)可數(shù)名詞或this / that / the+單數(shù)可數(shù)名詞作主語時(shí)，是第三人稱單。如：A horse is a useful animal. 馬是有用的動(dòng)物。This book is yours. 這本書是你的。That car is red. 那輛小汽車是紅色的。The cat is Lucys. 這只貓是露茜的。四、不定代詞someone, somebody, nobody, everything, something等及指示代詞this, that作主語時(shí)，是第三人稱單數(shù)。如：Everyone is here. 大家到齊了。There is something wrong with the watch. 這塊手表有毛病。This is a pen. 這是一支鋼筆。That is an eraser. 那是一塊橡皮擦。五、不可數(shù)名詞作主語時(shí)為第三人稱單數(shù)。如：The milk is in the glass. 牛奶在玻璃杯里。The bread is very small. 那面包很小。六、當(dāng)數(shù)字或字母作主語時(shí)，看作第三人稱單數(shù)。如：6 is a lucky number. 6是個(gè)吉利數(shù)字。I is a letter. I是個(gè)字母。PS:除上述規(guī)律外，還應(yīng)注意下面三點(diǎn)：1. 動(dòng)詞 have ，遇到主語是第三人稱單數(shù)時(shí)，要用 has； 動(dòng)詞be 的第三人稱單數(shù)形式是is。2. 含有動(dòng)詞第三人稱單數(shù)形式的句子變否定句時(shí)，要用 doesnt + 動(dòng)詞原形，如：He goes to school at six in the morning. (變否定句)He doesnt go to school at six in the morning.3. 對含有動(dòng)詞第三人稱單數(shù)形式的句子提問時(shí)，要用助動(dòng)詞does，如：She goes home at five every day. (對劃線部分提問) When / What time does she go home every day?（三）一般現(xiàn)在時(shí)-動(dòng)詞第三人稱單數(shù)形式構(gòu)成規(guī)則（一般現(xiàn)在時(shí)中主語時(shí)第三人稱1、大多數(shù)動(dòng)詞在詞尾加“S”如： stopstops makemakes readreads playplays 2、以輔音字母加“y”結(jié)尾的，要先將“y”變?yōu)椤癷”，然后在加“es”；以元音字母加“y”結(jié)尾的，直接加“S” 如： flyflies carrycarries studystudies worryworries3、以“s, x, ch, sh”結(jié)尾的，在詞尾加“es”，發(fā)音為如： teachteaches watchwatches 4、以“o”結(jié)尾的動(dòng)詞，加“es”，如： gogoes dodoes 5、以不發(fā)音字母“e”結(jié)尾的開音節(jié)詞，加“s” 如： closecloses iz6、特殊：. be動(dòng)詞包括：am， is， are。第三人稱單數(shù)用 is；過去式為 was；復(fù)數(shù)用are，過去式為were. 動(dòng)詞 have ，遇到主語是第三人稱單數(shù)時(shí)，要用 has； 動(dòng)詞 be 的第三人稱單數(shù)形式is。（四）鞏固練習(xí)題：一、 寫出下列動(dòng)詞的第三人稱單數(shù)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-二、用括號內(nèi)動(dòng)詞的適當(dāng)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. Im 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? Its Saturday三、觀察下面兩組句子，注意區(qū)分do和does,dont和doesnt。I go to school every day. I dont go to school every day.He goes to school every day. He doesnt go to school every day.Do you go to school every day? Yes, I do. (No, I dont) Does he go to school every day? Yes, he does. (No, he doesnt)注：（1）肯定句變否定句，第三人稱單數(shù)把 does變doesnt （does not），其余把do變dont（do not），后面跟動(dòng)詞原形.（一請一還原）（2）變?yōu)橐话阋蓡柧?要在句首加do 或does ，這取決于主語是否第三人稱單數(shù)。課堂練習(xí)：把下列句子改成一般疑問句和否定句。1I usually get up at six oclock.（并作肯定回答）2. We usually write e-mails