陳述句的肯定變否定??用法簡述
凡是說明一件事情,提出一個(gè)看法,或是表達(dá)種心情的句子都是陳述句。大多數(shù)的句子都是陳述句,它可以用肯定式和否定式。句末用句號(hào)“?”,通常用降調(diào)。下面小編為大家整理了陳述句的肯定句變否定句的基本方法,快來看看吧。
類型一:含實(shí)義動(dòng)詞的陳述句的否定式
實(shí)義動(dòng)詞變否定句時(shí),要借助助動(dòng)詞do/does/did,在一般現(xiàn)在時(shí)中用do或者does,在一般過去時(shí)中用did。相應(yīng)否定式的句子結(jié)構(gòu)為:主語+ don’t / doesn’t /didn’t+ 動(dòng)詞原形+其它
例如:I like pop music. --- I don’t like pop music.
She does her homework at home.
--- She doesn’t do her homework at home
He got up early yesterday.
---?He didn’t get up early yesterday.
類型二:含be動(dòng)詞的陳述句的否定式
be 動(dòng)詞根據(jù)不同的人稱和時(shí)態(tài)有不同的形式,在一般現(xiàn)在時(shí)中是am , is , are,可用作系動(dòng)詞,構(gòu)成否定式時(shí),一律在其后面加否定詞not.
例如:He is reading. --- He is not reading.
They are from China. --- They are not from China.
He was ill. ?--- He was not ill.
類型三:含情態(tài)動(dòng)詞的陳述句的否定式
情態(tài)動(dòng)詞的否定式是在其后面直接加not.
例如:I can swim. --- I can’t swim.
He can dance. --- He can’t dance.
以上就是小編整理的在三種不同情況下,陳述句由肯定句轉(zhuǎn)變?yōu)榉穸ň涞幕痉椒?,?qǐng)同學(xué)們結(jié)合例句仔細(xì)整理記憶。我們?cè)趯?shí)踐練習(xí)與閱讀中碰到的大多數(shù)句子都是陳述句,盡管陳述句非常簡單,同學(xué)們還是不要疏忽大意為好。