在一般現(xiàn)在時(shí)的肯定句中,當(dāng)主語為非第三人稱單數(shù)時(shí),謂語動(dòng)詞用原形;
當(dāng)主語為第三人稱單數(shù)時(shí),謂語動(dòng)詞用單數(shù)第三人稱形式。
實(shí)義動(dòng)詞的一般現(xiàn)在時(shí)的單數(shù)第三人稱形式遵從“s,es, ies”六字母規(guī)則。如下表所示:
實(shí)意動(dòng)詞單數(shù)第三人稱變化規(guī)律:
注意:不規(guī)則變化的有have—has, be—is, go—goes, do—does
一般現(xiàn)在時(shí),當(dāng)主語是第三人稱單數(shù)時(shí),謂語動(dòng)詞要用第三人稱單數(shù)形式
主語是第三人稱單數(shù)有以下幾種情況:
(1) 不可數(shù)名詞做主語:
Some water is in the glass
。2) 單個(gè)的可數(shù)名詞做主語:
The girl is Chinese. My watch is on the dresser.
。3) He ,she , it 等代詞單個(gè)做主語:
He is in the tree. She likes her family very much.
。4) 單個(gè)的人名,地名或稱呼作主語:
Mary is a doctor. Uncle Li speaks a little English.
Changchun is a beautiful city.
。5) 指示代詞this, that 等作主語:
This is a pear. That is an apple .
。6) Everyone, everything ,something, nobody, nothing.等不定代詞作主語時(shí)
Is everyone here today? Everything is ok .
。7)單個(gè)數(shù)字作主語時(shí):
”8” is a good number in China.
動(dòng)詞單數(shù)第三人稱形式的一般現(xiàn)在時(shí)的句子的否定句、疑問句及特殊疑問句。
否定句:
在主語的后面實(shí)義動(dòng)詞前加doesn’t(注意實(shí)義動(dòng)詞應(yīng)恢復(fù)原形。)
主語(單三)+doesn’ + 動(dòng)詞原形+其他
Jim likes football變否定: Jim doesn’t like football
He has lunch at school. 變否定:He doesn’t have lunch at school.
一般疑問句及答語,在句子前面加助動(dòng)詞does. 實(shí)義動(dòng)詞恢復(fù)原形
Does +主語(單三)+ 動(dòng)詞原形+其他
Does your father work ? Yes, he does. /No, he doesn’t
特殊疑問句:特殊疑問詞+一般疑問句
特殊疑問詞+ does +主語(單三)+ 動(dòng)詞原形+其他
Where does a bird live ?
How does she go to school?