一般现在时的用法一般现在时表示人、事、物现在的状况和特点或表示常常性、习惯性的动作,句中常有 always、often、usually等时间状语。现在时还可用于表达格言、科学事实、客观真理和至今不变的客观事实。肯定式疑问式否定式否定疑问式I smile.You smile.We smileThey smile.He(She)smiles注意:主语是任何一个单数名词或者是第三人称单数,谓语动词要进行必要的变化。特别提一点:不可数名词也算作单数处理。动词第三人称单数的变化规则与发音规律动词原形变第三人称单数的规则与发音规律同名词单数变复数大致一样,请仔细观察。1、大多数动词在词尾加“S”,在清辅音后发音为[s],在浊辅音与元音后发音为[z]。如:stop-stops [s] make-makes [s] read-reads [z] play-plays [z] 2、以辅音字母加“y”结尾的,要先将“y”变为“i”,然后在加“es”读[iz] 如:fly-flies [z]; carry-carries [z] study-studies [z]; worry-worries 3、以“s, x, ch, sh”结尾的,在词尾加“ es” ,发音为[iz] 如: teach-teaches [iz]; watch-watches [iz] 4、以“o”结尾的动词,加“es”,读[z] 如:go-goes [z] do-does [z] 句型I.疑问1.对于谓语动词或助动词是 be、have、can/may/must 等,将这些词移到主语前面。Are you students?Yes,we are. / No,we aren't.你们是一名学生吗?是的。我们是一名学生。/不,我们不是。Is Jane in the classroom? Yes,she is. / No,she isn't.简在这个教室里面吗?是的,她在。/不,她不在。Does the house have two rooms? Yes,it does / No,it doesn't.这栋房子里面有两个房间吗?是的/不,不是。Is there any water in the glass? Yes,there is. / No,there isn't.杯子里面有水吗?是的,有。/不,没有。Can you swim? Yes,I can. / No,I can't.你会游泳吗?是的,我会。/不,我不会。2.谓语动词是实义动词,方法是在主语前加助动词 do 或 does 构成,句中动词要改用原型动词。do 用于第一人称和名词复数,does 用于第三人称单数和名词单数或不可数名词。Do you know it?Yes,I do. / No,I don't.你知道这个吗?是的,我知道/不,我不知道。Does she have a pen?Yes,she does. / No,she doesn't.[have 这里是实义动词]她有一个钢笔吗?Do they play basketball after school? Yes,they ...