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(可數名詞) newspaper (不可數名詞) news watch ebook make friends all over the world do shopping TV ……外看 look out of go on still What day is today? spell make a sentence with yesterday 三、第四單元知識點梳理一般過去時情態(tài)動詞的句型轉換:(1)could引導的一般過去時的否定句,在could之后加not:could not=couldn’tSix years ago, I could write.(否定句)Six years ago, I couldn’t write. (2)could引導的一般過去時的一般問句,將could調至句首: Mike could read and draw.(一般問句) Could Mike read or draw? (3)could引導的特殊問句:特殊疑問句+could引導的一般問句: They could ride a bike.(對畫線部分提問) Could t