一般陳述句：I am a worker.I work as a worker.
改為否定句:I am not a worker.I doesn't work as a worker.
改為疑問句：Are you a worker?Do you work as a worker?
Yes,I am.Yes,I do.
No,I am not.No,I don't.
根據(jù)括號(hào)部分提問：
（I ）am a worker.（ I ）work as a worker.
問：Who is a worker?Who work as a worker?
I am a (worker).I work as a (worker).
問：What are you?Who works as a worker?
其中,where表示地點(diǎn),how 表示怎么樣,which表示選擇.
一般情況下,be動(dòng)詞后+not變成否定句,動(dòng)詞變否定在動(dòng)詞前加doesn't/don't/didn't,可根據(jù)動(dòng)詞的形式?jīng)Q定.情態(tài)動(dòng)詞后加not變否定句.
改一般疑問句時(shí),一般只要主謂交換位置,be動(dòng)詞和情態(tài)動(dòng)詞都屬于這種情況.而含有動(dòng)詞的句子變一般疑問句時(shí),則要用do/does/did放于句首,主謂位置不變,但是動(dòng)詞必須還原.