一、否定句
1.主語+be動詞+表語結(jié)構(gòu)
變否定句,直接在be動詞后面加個not就可以了.
Mr. White is a very good teacher.-->Mr. White is not a very good teacher.
2.主語+動詞+其他
當(dāng)此句為一般現(xiàn)在時,在動詞之前加don't或doesn't（第三人稱單數(shù)形式）,并將動詞變?yōu)樵尉涂梢粤?br/>He loves playing football with his friends.-->He doesn't love playing football with his friends.
當(dāng)此句為過去時,在動詞之前加didn't,并且把動詞變?yōu)樵?br/>Tom's sister graduated from high school last year.-->Tom's sister didn't graduate from high school last year.
3.主語+情態(tài)動詞+動詞+其他
在情態(tài)動詞后面加not就可以了
I can drive a car.-->I cannot drive a car.
4.主語+have/has+動詞過去分詞+其他
在have/has后面加not就可以了
The students have done their homework.-->The students have not done their homework.
二、一般疑問句
1.主語+be動詞+表語結(jié)構(gòu)
變一般疑問句,把be動詞提前,句子就變成 be動詞+主語+表語結(jié)構(gòu)?
Mr. White is a very good teacher.-->Is Mr. White a very good teacher?
2.主語+動詞+其他
當(dāng)句子為一般現(xiàn)在時,在句首加do或does,并且把動詞變?yōu)樵?句子變成 Do/Does+主語+動詞原形+其他?
He loves playing football with his friends.-->Does he love playing football with his friends?
句子為一般過去時,在句首加did,句子變成 Did+主語+動詞+其他?
Tom's sister graduated from high school last year.-->Did Tom's sister graduate from high school last year?
3.主語+情態(tài)動詞+動詞+其他
將情態(tài)動詞提前,句子變成 情態(tài)動詞+主語+動詞原形+其他?
I can drive a car.-->Can you drive a car?
4.主語+have/has+動詞過去分詞+其他
將have/has提前,句子變成have/has+主語+動詞過去分詞+其他
The students have done their homework.-->Have the students done their homework?
三、對劃線部分提問
先找出劃線部分在句子中所占得成分,找到對應(yīng)的疑問詞,將疑問詞寫在句首,再將原句變成一般疑問句,卻掉劃線的部分,寫在疑問詞后面就可以了.
Tom bought a new computer from the store yesterday.
若劃線部分為Tom,Tom 是個人,且作主語,則疑問詞應(yīng)選Who, 此句應(yīng)該為 Who bought a new computer from the store yesterday?
若劃線部分為a new computer, 劃線部分為物,則疑問詞為what,此句應(yīng)為 What did Tom buy from the store yesterday?
若劃線部分為from the store,則疑問詞應(yīng)為Where,表示地點,此句應(yīng)為 Where did Tom buy a new computer yesterday?
若劃線部分為yesterday,則疑問詞為When,表示時間,此句應(yīng)為 When did Tom buy a new computer from the store?
希望對你有幫助~~~ ^^