1、定义:表示经常发生或习惯性的动作、状态。句中通常有usually,often,every day,sometimes,always,at weekends,on Sundays等表示经常性时间的短语。
2、构成:
1)当谓语是be动词时,一般现在时的构成:主语+be动词+其他
如:I am a student. He is Jim’s father. They are from Japan.
2)当谓语是行为动词时,一般现在时的构成:
①主语(非第三人称单数)+动词原形+其他
如:I often watch TV at the weekends.
Mr Green and Mrs Green like collecting stamps.
②主语(第三人称单数)+动词的第三人称单数形式+其他
如:Jim usually visits his grandparents on Sundays.
She sometimes goes to the park with her mother.
3、动词三单形式的变化规则:
一般情况下,直接加s。如:read-reads,swim-swims
以s,x,sh,ch,o结尾,加es。如:wash-washes,watch-watches,do-does
以辅音字母+y结尾,变y为i,再加es。 如:study-studies,fly-flies
不规则变化。如:have-has
4、一般现在时的句型转换:
肯定句
否定句
一般疑问句及回答
They watch TV
every day.
They don’t watch TV
every day.
—Do they watch TV every day?
—Yes, they do. / No, they don’t.
She watches TV
every day.
She doesn’t watch
TV every day.
— Does she watch TV every day?
—Yes, she does. / No, she doesn’t.