动词原型变动词三单的规则

一五计划2023-02-15  23

1、大多数动词在词尾加“S”在清辅音后发音为[s],在浊辅音及元音后发音为 [z].如:

①stop-stops [s] make-makes [s]

②read-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]

下面几个动词变为单数时,原词的元音部分的发音发生了较大的变化,请注意记忆.如:

1、do [du:]-does [dz]

2、say [sei]-says [sez]

以不发音字母“e”结尾的开音节词,如果尾音是[s],[z]时,加“s”后字母“e”发音,与所加“s”

一起读做[iz].如:close-closes [iz]

be动词包括:am,is,are.第三人称单数用 is;过去式为 was;复数用are,过去式为were.

除上述规律外,还应注意下面三点:

1.动词 have ,遇到主语是第三人称单数时,要用 has; 动词 be 的第三人称单数形式是is.

2.含有动词第三人称单数形式的句子变否定句时,要用 doesn't + 动词原形,如:

He goes to school at six in the morning.(变否定句)→ He doesn't go to school at six in the morning.

3.对含有动词第三人称单数形式的句子提问时,要用助动词 does,如:

She goes home at five every day.(对划线部分提问)→ When / What time does she go home every day?

一般现在时主语单三人称时的动词变化

①在一般现在时中,当主语为第三人称单数时,动词要用“s”型(即第三人称单数形式)。

②所谓动词“s”型的构成,可按名词变复数的规则来记,即:

i)在动词尾直接加 s。如:

play—plays, want—wants, work—works, know—knows, help—helps,get—gets

ii)以字母s、x、ch或o结尾的动词加-es;如:

guess—guesses, fix—fixes, teach—teaches, brush—brushes, go—goes,do—does,watch—watches,catch—catches

iii)以辅音字母+y结尾的动词,先变y为i,再加-es。如:

study—studies,carry—carries,fly—flies,worry—worries

祝学业进步,望采纳


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