一般现在时三单

一般现在时

1.概念：经常、反复发生的动作或行为及现在的某种状况。

2.时间状语：always,usually,often,sometimes,every week(day,year,month

…),once a week,on Sundays,

3.基本结构：动词原形/第三人称单数形式（如主语为第三人称单数，动词上要改为第三人称单数形式）

4.否定形式：am/is/are+not;谓语动词若为动词，则在其前加don't,如主语为第三人称单数，则用doesn't，同时还原行为动词。

一般疑问句：把be动词放于句首；用助动词do提问，如主语为第三人称单数，

则用does，同时，还原行为动词。

三单动词的变化规则

1．一般情况下，直接加-s如：play—plays，want—wants，work—works，know—knows，help—helps，get—gets

2．以s.x.sh.ch.o结尾，加-es如：guess—guesses，fix—fixes，teach—teaches，brush—brushes，go—goes，do—does，watch—watches，catch—catches

3．以“辅音字母+y”结尾，变y为i,再加-es如：study—studies，carry—carries，fly—flies，worry—worries

规则：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。

1.人称代词中he, she, it是第三人称单数。

例如：①He likes swimming very much. 他非常喜欢游泳。

②She eats healthy food every day. 她每天吃健康的食物

③It looks like a cat. 它看起来像只猫。

2.单个人名、地名或称呼作主语;是第三人称单数

如：①Jane wants to go travelling on the summer vacation. 暑假Jane想去旅游。

②Beijing is in China. 北京在中国。

3.单数可数名词或"this/that/the+单数可数名词"作主语时，是第三人称单数

例如：①A horse is a useful animal. 马是有用的动物。

②This book is yours. 这本书是你的。

③That car is red. 那辆小汽车是红色的。

4.不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数。

如：①Everyone is here. 大家到齐了。

②There is something wrong with the watch. 这块手表有毛病。

③This is a pen.这是一支钢笔。

④That is an eraser.那是一块橡皮擦。

5.不可数名词作主语时为第三人称单数。

如：①The milk is in the glass.牛奶在玻璃杯里。

②The bread is very small.那面包很小。

6.当数字或字母作主语时，看作第三人称单数。

如："I"is a letter."I"是个字母。

drink________go_______stay________make________look_________ have_______pass_______carry____come________watch______ plant_______fly________study_______brush________do_________ teach_______catch_________wash_________like________have______ say_________learn________eat________read_________sing_______

二、用括号内动词的适当形式填空。

1.He often________(have)dinner at home.

2.Daniel and Tommy_______(be)in Class One.

3.We_______(not watch)TV on Monday.

4.Nick_______(not go)to the zoo on Sunday.

5.______they________(like)the World Cup?

6._______your parents_______(read)newspapers every day?

7.The girl_______(teach)us English on Sundays.

8.She and I________(take)a walk together every evening.

9.There________(be)some water in the bottle.

10.Mike_______(like)cooking.

11.They_______(have)the same hobby.

12.You always_______(do)your homework well.

13.She_______(go)to school from Monday to Friday.

14.The child often_______(watch)TV in the evening.

15.We often___________(play)in the playgound.

16.He usually_________(get)up at six o’clock.

17..__________you_________(brush)your teeth every morning.