一般疑問句

表示疑問，一般回答只有兩種可能Yes，……或No，……句中沒有疑問詞。

如何將一個肯定的陳述句改為否定句：

1、看句中有無be動詞，如有，把be動詞提到句首即可。

2、看句中有無情態(tài)動詞，如有，把情態(tài)動詞提到句首即可。

3、如上述二者都沒有，就應把助動提到句首。分四個步驟：

（1）肯定陳述句中本來是沒有助動詞的，要加上去，位置在主語（某人或某物）后，動詞前。

（2）確定助動詞用do、does還是did，根據(jù)句中動詞，動詞是原形的助動詞就用do，動詞是第三人稱單數(shù)的助動詞就用does，動詞用過去式的助動詞就有did。

（3）把助動詞后提到句首。

（4）原句中動詞假如發(fā)生變化就要恢復成原形。

強調(diào)一點，有some的要考慮是否要用any。

是指詢問事實的句子,此類句子必須用"yes",或"no"來回答.

如:Are you a student Yes, I am / No, I'm not.
Is she a doctor Yes, she is. / No, she isn't.
Does he work in a hospital Yes, he does. / No, he doesn't.
Are there four fans in our classroom Yes, there are. / No, there aren't.
Are you going to buy a comic book tonight Yes, I am. / No, I am not. (Yes, we are. / No, we aren't.)
Will he eat lunch at 12:00 Yes, I will. / No, I will not(won't).
Are they swimming Yes, they are. / No, they aren't.
Did you watch TV yesterday evening Yes, I did. / No, I didn't.

Is she a doctor Yes, she is. / No, she isn't.

Does he work in a hospital Yes, he does. / No, he doesn't.

Are there four fans in our classroom Yes, there are. / No, there aren't.

Are you going to buy a comic book tonight Yes, I am. / No, I am not. (Yes, we are. / No, we aren't.)

Will he eat lunch at 12:00 Yes, I will. / No, I will not(won't).

Are they swimming Yes, they are. / No, they aren't.

Did you watch TV yesterday evening Yes, I did. / No, I didn't.

☆注意☆ 小結(jié):一般疑問句是在肯定句的基礎上,

①把動詞be調(diào)到首位,其他照寫,末尾標點符號變成問號即可.

②沒有動詞be的句子則要在句首加上一個助動詞(do,does,did)再把緊跟在后面的動詞變回原形,末尾標點符號變成問號即可.

這三個助動詞也要根據(jù)人稱和時態(tài)來選擇,其中"does"只用于一般現(xiàn)在時主語是第三人稱單數(shù)的情況,而"did"只用于一般過去時,不論主語是什么人稱和數(shù),都用"did" .一般疑問句有個重要的原則就是問和答要一致,即問句里的第一個單詞(助動詞)和簡略答句里的這個詞是一致的.