動詞單三變化規(guī)則
1.一般情況下,直接在動詞詞尾+s:
2.以s,x,sh,ch,o結(jié)尾的動詞,在詞尾+ es:
3.以輔音字母+ y 結(jié)尾的動詞,先把y變?yōu)閕,再加es:
4.不規(guī)則動詞(特殊情況):
變否定句時遵循的規(guī)則
含有動詞第三人稱單數(shù)形式的句子變否定句時,要在動詞前面加上doesn’t 或does not,動詞的第三人稱單數(shù)形式要還原成原形:格式為doesn’t/does
not+ 動詞原形,如:
He goes to school at six in the morning. (變否定句) 就變換為:
He doesn't go to school at six in the morning.
2.變一般疑問句:把含有動詞第三人稱單數(shù)形式的變成一般疑問句時,要借用助動
詞does,如:
She goes home at five every day.(變疑問句)就變換為:
Does she go home at five every day? -- Yes,she does./No,she doesn’t.
哪些主語是第三人稱單數(shù)
1.人稱代詞he,she,it;
如:He likes watching TV.
She has lunch at twelve.
It looks like a cat.
2.單個人名、地名或稱呼作主語;是第三人稱單數(shù)。如:
Han Mei looks like her mother.
Beijing is in China.
Uncle Wang often makes cakes.
3.單數(shù)可數(shù)名詞或
this/that/the+單數(shù)可數(shù)名詞作主語時,是第三人稱單數(shù);
A horse is a useful animal.
This book is yours.
That car is red.
4、不可數(shù)名詞作主語時為第三人稱單數(shù)。如:
The milk is in the glass.
The bread is very small.
The water is very cold.