來源:網(wǎng)絡(luò)資源 2022-07-12 10:18:06
定義:經(jīng)常反復(fù)發(fā)生的動作或存在的狀態(tài)
be動詞用am/is/are
實意動詞用原形或單三形式
句型變化
(1)一般疑問句:將am/is/are提前,I變you,my變your,I am變Are
you,句號變問號。
(2)否定句;在am/is/are后加not
She is a student.
Is she a student?
She isn't a student.
當(dāng)主語不是單三時,謂語動詞用原型
句型變化
(1)一般疑問句:在句首加助動詞do,I變you,my變your,句號變問號。
(2)否定句;在主語和謂語之間加助動詞don't
I like blue.
Do you like blue?
I don't like blue.
當(dāng)主語是單三時,謂語動詞用單三形式
句型變化
(1)一般疑問句;在句首加助動詞does,my變your,動詞還原,句號變問號
(2)否定句;在主語和謂語動詞之間加助動詞doesn't,動詞還原
She likes blue.
Does she like blue?
She doesn't like blue.
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