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1、初中八大时态专项讲解专题一： 一般现在时一，用法：1) 经常性或习惯性的动作，常与表示频度的时间状语连用。 时间状语： every„, sometimes, at„, on Sunday ...Eg:weoftencalltoeachother.Shealwayswearsredclothes.2)客观真理，客观存在，科学事实。 Eg:The earth moves around the sun. Shanghai lies in the east of China. 3) 表示格言或警句中。 Eg:Pride goes before a fall
2、. 骄者必败。二，句式： 1. be动词的变化(am/is/are)。 否定句：主语+ be + not +其它。 Eg：He is not a worker.他不是工人。一般疑问句：Be +主语+其它。 Eg：-Are you a student? -Yes. I am. / No, I’m not.特殊疑问句：疑问词+一般疑问句。 Eg：Where is my bike?2.行为动词的变化(do/does)。 否定句：主语+ don’t( doesn’t ) +动词原形(+其它)。 Eg：I don’t like bread.
3、当主语为第三人称单数时，要用doesn’t构成否定句。 Eg： He doesn’t often play.一般疑问句：Do( Does ) +主语+动词原形+其它。 Eg：- Do you often play football?- Yes, I do. / No, I don’t. 当主语为第三人称单数时，要用does构成一般疑问句。 Eg：- Does she go to work by bike? - Yes, she does. / No, she doesn’t.特殊疑问句：疑问词+一般疑问句。 Eg：How does your fath
4、er go to work?三，第三人称单数的动词变化规则(只有在第三人称为主语的肯定句中，动词才用三单式) (1)多数动词直接加s: runs gets likes collets takes plays climbs„„. (2)结尾是s, x, sh, ch, o,前为辅音字母,结尾加es : watches teaches goes does washes crosses mixes brushes(3)动词末尾y前为辅音:将y改为i加es: study→studies fly→flies carry→carries cry→cri
5、es , 但在y前如果为元音则直接加s: buys says.Exercise:一，选择( )1._____youhaveabook? A.Do B.Are C.Is D.Have( )2.They_________onafarm. A.working B.iswork C.work D.isworked( )3.DoesPeterliketowatchTV? __________. A.Yes,helike B.No,hedoesn’t C.Yes,he’dlike D.No,helikes( )4.Shedoesn’t_________
6、_herhomeworkintheafternoon. A.doing B.todo C.does D.do( )5.How____________Mr.Brown___________toAmerica? A.do,go B.is,go C.does,go D.does,goes( )6.Where’smycamera?I____________it. A.amnotfinding B.amnotseeing C.can’tfind D.can’tlookat( )7.How___________hegotowork? He________
7、___toworkbybike. A.does;go B.do;goes C.do;go D.does;goes( )8.______youusuallylateforschool? No,_____________. A.Do;Iam B.Does;not C.Are;I’mnot D.Are;Iaren’t( )9._____she_____homeatsixeveryday? A.Is,leave B.Does,leave C.Is,leaves D.Does,left( )10.Mr.Yang____________Englishthi
8、sterm.A.teachesour B.teachesus C.teachsus D.tea
