初一一般现在时态精讲讲解.doc
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初一英语一般现在时态讲解
定义与讲解一般现在时表示经常或习惯性的动作或一般性事实。,也可表示现在的状态或主语具备的性格和能力。通常与副词every dayalways(总是),usually(通常),often(经常)sometimes(有时),等时间状语连用。例:(1)表示事物或人物的特征、状态。The sky is blue.天空是蓝色的。Mary’s father is an English teacher. 玛丽的爸爸是一名英语老师。 (2)表示经常性或习惯性的动作。I get up at six every day.我每天六点起床。She plays sports every day. 她每天都做运动。 (3)表示客观现实。The table has four legs.桌子有四条腿。There are 50 students in my class. 我们班有50个学生。
()表示客观真理,科学原理,自然现象,等客观事实或格言谚语等。
The sun rises in the east every day.The earth goes around the sun.地球绕着太阳转。()I like bananas. We don’t like vegetables.
He likes ice cream. She doesn’t like strawberries.
二.只有在第三人称单数用动词的“三单”,其他用动词原形。
三单变化:(1)多数直接在动词词尾加-s. play — plays like — likes
ask---asks work---works get---gets call---calls
(2)以字母s, x, ch, sh或o结尾的动词,在词尾直接加-es.
watch---watches wish---wishes do---does go---goes
(3)以“辅音字母加 - y”结尾的动词,要先变y为i再加-es.
try---tries study---studies cry---cries fly---flies
2.不规则变化:be---- is have----has三、一般现在时的句子转换:
(1)变疑问句当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等)提到主语的前面;
(2)在be动词或情态动词后面加not变成否定句. 例:①陈述句:She is.
疑问句→ Is she ? Yes, I am./ No, I’m not.
否定句→ She is not .
②陈述句:I can
疑问句→ Can youYes,Ican./ No, I can’t.
否定句→ I can not ’t play soccer.
注意:对一般疑问句的回答:用什么问就用什么来回答。Yes , it is./ No, it isn’t.
Is that your backpack? Yes , it is./ No, it isn’t.
Are these your parents? Yes, they’re./ No, they aren’t.
Are those Jim’s brothers? Yes, they’re./ No, they aren’t.
()当句子中没有be动词,也没有情态动词时,在主语前加助动词do (you,以及复数), does(单数she,he,it)变成问句;()在主语后谓语动词前加助动词don’t, doesn’t变成否定句,助动词后的动词动词原形。
例:①陈述句:We get up at 7:00 every morning.
疑问句→Do you get up at 7:00 every morning?
否定句→We don’t get up at 7:00 every morning.
②陈述句:She has a brother.
疑问句→ Does she have a brother?否定句→ She doesn’t have a brother在一般现在时中,当主语是第三人称单数时,谓语动词要用第三人称单数形式,即常在动词原形后加-s或-es。但有些同学们对于哪些主语是第三人称单数还不十分清楚,现归纳总结如下: 一、人称代词he, she, it是第三人称单数。如: He likes watching TV. 他喜欢看电视。 She has lunch at twelve. 她十二点吃午餐。 二、单个人名、地名或称呼作主语;是第三人称单数。如: ①Han Mei
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