初中英语语法——一般现在时知识点总结归纳

初中英语语法——一般现在时知识点总结归纳一般现在时——表示一般性，经常性的动作或一般性事实。概念:表示经常发生的动作或经常存在的状态。常和always,often,usually,sometimes,everyday等表时间的状语连用。如：1)Igotoschooleveryday.我每天都去学校。(表经常)2)Heisalwayslikethat.他总是那样。(表状态)构成：1)主语+be(am/are/is)+……2)主语+实义动词/三单动词+…【解析】1、含有be动词的句子Heisateacher.Thegirlisverybeautiful.TimandJackarestudents.★变疑问句将be动词移到句首Isheateacher?Isthegirlverybeautiful?AreTimandJackstudents?★变否定句在be动词后面加notHeisnotateacher.Thegirlisnotverybeautiful.TimandJackarenotstudents.★肯定回答及否定回答Yes,heis./No,heisnot.Yes,sheis./No,sheisnot.Yes,theyare./No,theyarenot.2、不含有be动词的句子，即含有一般动词的句子。(1)第三人称单数及单数名词Helikesbooks.Shelikeshim.Thedoglikesbones.★变疑问句在句首加does,动词变为原型Doeshelikebooks?Doesshelikehim?Doesthedoglikebones?★变否定句在主语及动词之间加doesn't,动词变为原型，原句中的动词不再有第三人称变化。Hedoesn'tlikebooks.Shedoesn'tlikehim.Thedogdoesn'tlikebones.★肯定回答及否定回答：Yes,hedoes./No,hedoesn't.Yes,shedoes./No,shedoesn'tYes,itdoes./No,itdoesn't.注意：第三人称单数形式一般在动词后面加S，不要和名词复数混淆，变否定句或疑问句时名词复数没有任何变化。(2)其他人称及复数名词Iwanttohaveabath.Wehavesomemeat.Thestudentslikesmartteachers.★变疑问句在句首加doDoyouwanttohaveabath?Dowehaveanymeat?Dothestudentslikesmartteachers?★变否定句在主语和动词之间加don't.Youdon'twanttohaveabath.Wedon'thaveanymeat.Thestudentsdon'tlikesmartteachers.★肯定回答及否定回答Yes,Ido./No,Idon't.Yes,wedo./No,wedon'tYes,theydo./No,theydon't.