内容正文:
动词单三形式的用法
什么是主语?
主语即“动作的发出者”或者“表述的对象”,一般由名词、代词等充当,主语是一个句子的中心,一般在句子的前面
I often read books at home on the weekend.
He often reads books at home on the weekend.
We draw pictures on Fridays.
John draws pictures on Fridays.
I go to school at 8:00 everyday.
She goes to school at 8:00 everyday.
找主语
人称
人称:第一人称:I, we
第二人称: you
第三人称: he, she, it, 人名(单\复),they
第三人称单数: he, she, it, 单数人名
动词第三人称单数的变化规则
一般情况下的动词变化:
对于大多数动词,只需要在原形的基础上加上“-s”即可。
例如:work(工作)→ works(工作,第三人称单数)
以s、x、sh、ch等音结尾的动词:
如果动词的词尾以“s”、 “x”、 “sh”、 “ch”等音结尾,应该在其基础上加上“-es”。
例如:fix(修复)→ fixes(修复,第三人称单数)
动词第三人称单数的变化规则
以辅音+y结尾的动词:
如果动词以辅音+y结尾,将“y”变为“i”,再加上“-es”。
例如:study(学习)→ studies(学习,第三人称单数)
以元音+y结尾的动词:
如果动词以元音+y结尾,直接加上“-s”。
例如:play(玩耍)→ plays(玩耍,第三人称单数)
动词第三人称单数的变化规则
不遵循规则变化的动词:
有一些动词的变化并不遵循上述规则,需要特别注意。例如:
have(有)→ has(有,第三人称单数)
be(是/在)→ is(是/在,第三人称单数)
I often read books at home on the weekend.
He often reads books at home on the weekend.
We draw pictures on Fridays.
John draws pictures on Fridays.
I go to school at 8:00 everyday.
She goes to school at 8:00 everyday.
变否定句时遵循的规则
含有动词第三人称单数形式的句子变否定句时,要在动词前面加上doesn’t或doesnot,动词的第三人称单数形式要还原成原形:格式为doesn’t/does
He goes to school at six in the morning.
(变否定句)就变换为:He doesn't go to schoo1 at six in the morning.
变一般疑问句规则
变一般疑问句:把含有动词第三人称单数形式的变成一般疑问句时,要借用助动词does,
如:She goes home at fiveevery day.
(变疑问句)就变换为:
Does she go home at five every day?
肯定回答-- Yes,she does.
否定回答:No,shedoesn’t.
常见错误及避免方法:
忽略动词变化:
错误:He go to school every day. 正确:He goes to school every day.
误用“-s”结尾的动词: 错误:She enjoyes swimming. 正确:She enjoys swimming.
误用“-es”结尾的动词:错误:He fixs the car. 正确:He fixes the car.
习题:
Mike often___ (cook) at home.
He ____(get) up at 7:00 every day.
The girl ________(teach)us English on Sundays.
She often ____(go) to the zoo.
He ______(study) English every day.
Mike likes(like) cooking.
My aunt looks(look) after her baby carefully.
Nick doesn't go(not go) to the zoo