英語陳述句變否定和一般疑問句

題目：

英語陳述句變否定和一般疑問句

解答：

陳述句變成否定句 一） 在其句中含有動詞的陳述句,在《BE》動詞後加上〈not>即可：
例如：1) She was playing basketball at that time.
_ She was not playing basketball at that time.
2) We are having lunch at school .
_ We are not having lunch at school .
二） 在其句中含有情態動詞的陳述句,在情態動詞後加上〈not)即可：
例如：1） They can speak English very well.
_ Thet can not speak English very well .
2) I can be a middle school student.
_ I can not be a middle school student .
三） 在其句中含有實義動詞的陳述句,在主語後實義動詞前加上（don't ,doesn't ,didn't)即 可；其中（don't 和 doesn't)主要用於一般現在時態,（didn't)只要用於一般過去時態.在使用（doesn't 和 didn't)時,要將相應的謂語動詞還原成原形；
例如 ：1） They love lishening to music .
_ They don't love lishening to music .
2) She gives me a book to read.
_ She doesn't give me a book to read.
3) My sister helped me learn French.
_ My sister didn't help me learn French .
以上三點僅用於一般現在時態和一般過去時態的陳述句.
陳述句變一般疑問句
一般疑問句分爲be詞提前和助動詞
1 be詞（am\is\are和他們的過去式were\was）提前
eg：1）He is a student!(他是一名學生)
Is he a student?（他是一名學生嗎?）
2) We are students!（我們是學生）
Are you students?（你們是學生嗎?）
3)I am a student!(我是一名學生!)
Are you students?（你是學生嗎?）
2助動詞（do\did have\had ）
eg:1) He eat an apple.(他吃蘋果.)---eat爲動詞原形用do提問
Do he eat an apple?(他是蘋果了嗎?)
2）He ate an apple.（他吃了蘋果）--ate爲eat的過去分
是詞用did提問同時動詞ate恢復原形爲eat
Did he eat apple?(他吃了蘋果了嗎?)
3）I have\had finished homework.(我完成了作業)
Have\had you finished homework?(你完成作業了沒?)
3 can \ may \must 等情態動詞
eg:1)we can\may\must do it .(我們能\可能\必須完成它)
Can\May\Must we must do it?(我們能\可能\必須完成它嗎?)