【正文】 、單數(shù)可數(shù)名詞或“this / that / the+單數(shù)可數(shù)名詞”作主語(yǔ)時(shí)，是第三人稱單數(shù)。如：① A horse is a useful 。② This book is 。③ That car is 。④ The cat is Lucy39。四、不定代詞someone, somebody, nobody, everything, something等及指示代詞this, that作主語(yǔ)時(shí)，是第三人稱單數(shù)。如：① Everyone is 。② There is something wrong with the 。③ This is a 。④ That is an 。五、不可數(shù)名詞作主語(yǔ)時(shí)為第三人稱單數(shù)。如： ① The milk is in the 。② The bread is very 。六、當(dāng)數(shù)字或字母作主語(yǔ)時(shí)，看作第三人稱單數(shù)。如： ①“6” is a lucky number.“6”是個(gè)吉利數(shù)字。②“I” is a letter.“I”是個(gè)字母。第三人稱單數(shù)形式的構(gòu)成 s，如：workworks livelives makemakes ,x,ch ,sh等結(jié)尾的單詞加 es , 如： missmisses fixfixes finishfinishes teachteaches ，變y為i加 es , 如： flyflies ，加 es 如: gogoes dodoesbe動(dòng)詞包括：am，is，are。第三人稱單數(shù)用 is；過(guò)去式為 was；復(fù)數(shù)用are，還應(yīng)注意下面三點(diǎn)： have，遇到主語(yǔ)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。，要用 doesn39。t + 動(dòng)詞原形，如：He goes to school at six in the morning.(變否定句)→ He doesn39。t go to school at six in the ，要用助動(dòng)詞 does，如：She goes home at five every day.(對(duì)劃線部分提問(wèn))→ When / What time does she go home every day? 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(yǔ)是第三人稱單數(shù)時(shí)，謂語(yǔ)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。第2 / 6頁(yè)動(dòng)詞單三的練習(xí)三 寫出下列動(dòng)詞的第三人稱單數(shù)。go do play jump swim run put sing dance e get have fly read write look drink eat walk _____(be)a _____(look)like a (go)to the _____(go)to (like)eating (be)next to teacher _____(be)talking with book _____(be)this ? _____(be)our / 6頁(yè) blackboard _____(be) desk _____(be)Tom’ _____(do)her _____(is)ok! _____(be)in the _____（be）someone in the cat _____(be) little water _____(be)in the _____（taste） letter “O” _____(look)like .“4” _____(be)a bad number in 、否定句、一般疑問(wèn)句，并做回答。 like playing the pinao in the music room.(Tom) need a pencilbox for new term.(Sam’s sister) do my homework at half past four in the afternoon.（she） have breakfast at twentyfive past seven in the morning.(her father) watch TV at quarter past six with my parents.(Tom’s sister)二 小學(xué)英語(yǔ)所有句型轉(zhuǎn)換的方法基本助動(dòng)詞只有三個(gè)：be, do, have, 他們沒(méi)有詞匯意義，只有語(yǔ)法作用，第3 / 6頁(yè)如協(xié)助構(gòu)成進(jìn)行體，完成體，被動(dòng)態(tài)，否定句，疑問(wèn)句等。一、肯定句改否定句的方法——一步法在be動(dòng)詞后加not。如：is not，are not，am not，was not，were not；在can，should，will等后加not。如：cannot，should not，will not；上述都沒(méi)有的，在動(dòng)詞前加助動(dòng)詞否定形式don’t/doesn’t/didn’t。some 改成any。二、肯定句改一般疑問(wèn)句的方法——三步法把be動(dòng)詞放在句首，剩下的照抄，（some 改成any，my改成your等）句點(diǎn)改成問(wèn)號(hào)。把can，shall，will等放到句首，剩下的照抄，（some 改成any，my改成your等）句點(diǎn)改成問(wèn)號(hào)。例如：陳述句: They are in the can play the guitar..一般疑問(wèn)句: Are they in the park? Can he play the guitar? 把下列句子變成一般疑問(wèn)句 am listening to is a can clean the are in the 第4 / 6頁(yè) are some flowers in the is my are sweeping the 上述都沒(méi)有的，在句首請(qǐng)助動(dòng)詞Do/Does/Did幫忙，剩下的照抄，（some 改成any，my改成your等）句點(diǎn)改成問(wèn)號(hào)。例如：陳述句: I like the likes the ：Do you like the ducks? Does he like the dogs? 把下列句子改為一般疑問(wèn)句。 need some like making the Hai and Su Yang live in a new put a book on my sing “In the classroom” play basketball on 動(dòng)詞的第三人稱單數(shù)形式規(guī)律如下：多數(shù)在動(dòng)詞后加s play—plays like—likes readreads singsings dancedances cookcookslooklooks以s，x，sh，ch，o結(jié)尾的動(dòng)詞加es go—goes wash—washes watchwatches catchcatches dodoes以輔音字母加y結(jié)尾，把y改i再加es fly—flies study—studiestrytries 特別注意：以y 結(jié)尾的動(dòng)詞變化，看清楚y前面的那個(gè)字母是元音還是輔音？ 輔音+y的，要改y，例如carry carries。元音+y 的，不改y,例如 play 、動(dòng)詞have 的第三人稱單數(shù)形式是has，這是一個(gè)不規(guī)則的變化，我們經(jīng)常會(huì)遇到。含有動(dòng)詞第三人稱單數(shù)的句子，在變否定句時(shí)要在動(dòng)詞前加doesn’t；變疑問(wèn)句時(shí)要在主語(yǔ)前加助動(dòng)詞does。這時(shí)句子的謂語(yǔ)動(dòng)詞改為原形。如： Alice usually plays in the doesn’t usually plays in the park.