一般現(xiàn)在時(shí)

　　一. 意義：表示經(jīng)常發(fā)生的事情，動(dòng)作或存在的狀態(tài)

　　二. 構(gòu)成及變化

　　1.be動(dòng)詞的變化。

　　肯定句：主語(yǔ)+be(am,is,are)+其它。如：　I am a boy.我是一個(gè)男孩。

　　否定句：主語(yǔ)+ be + not +其它。如：He is not a worker.他不是工人。

　　一般疑問(wèn)句：Be +主語(yǔ)+其它。 如：-Are you a student? 　-Yes. I am. / No, I'm not.

　　特殊疑問(wèn)句：疑問(wèn)詞+一般疑問(wèn)句。如：Where is my bike?

　　2. 行為動(dòng)詞的變化。

　　當(dāng)主語(yǔ)為第一，二人稱及復(fù)數(shù)時(shí)，助動(dòng)詞為do

　　肯定句：主語(yǔ)+動(dòng)詞原形(+其它)。如：　We often play basketball after school.

　　否定句：主語(yǔ)+ don't+動(dòng)詞原形(+其它)。如：we don’t play basketball after school.

　　一般疑問(wèn)句：Do +主語(yǔ)+動(dòng)詞原形+其它?

　　如： Do you often play basketball after school l? Yes, we do. / No, we don't.

　　特殊疑問(wèn)句：疑問(wèn)詞+以do開(kāi)頭的一般疑問(wèn)句?

　　如： What do you often do after school ?

　　當(dāng)主語(yǔ)為第三人稱單數(shù)時(shí) ,助動(dòng)詞為does

　　肯定句：主語(yǔ)+動(dòng)詞三單式(+其它)。如： He swims well.

　　否定句：主語(yǔ)+ doesn’t+動(dòng)詞原形(+其它)。如：He doesn’t swim well..

　　一般疑問(wèn)句：Does +主語(yǔ)+動(dòng)詞原形+其它。

　　如：Does he swim well ? Yes, he does. / No, he doesn't.

　　特殊疑問(wèn)句：疑問(wèn)詞+以does開(kāi)頭的一般疑問(wèn)句?

　　如： How does your father go to work?

　　三.第三人稱單數(shù)的動(dòng)詞變化規(guī)則(只有在第三人稱為主語(yǔ)的肯定句中，動(dòng)詞才用三單式)

　　(1)多數(shù)動(dòng)詞直接加s:runs gets likes collets takes plays climbs…….

　　(2)結(jié)尾是s, x, sh, ch, o,前為輔音字母,

　　結(jié)尾加es :watches teaches goes does washes crosses mixes brushes

　　(3)動(dòng)詞末尾y前為輔音:將y改為i加es: study→studies fly→flies carry→carries cry→cries

　　但在y前如果為元音則直接加s:buys says

　　四.時(shí)間標(biāo)志：always , usually , often , sometimes ,every…