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句中一般含有now, look, listen.) +動詞ing. 如:Tom is reading books in his study . . 如:Tom is reading books in his study . Tom is not reading books in his study . 。 如:Tom is reading books in his study . Is Tom reading books in his study ? ?。阂蓡栐~+一般疑問句? (注意:當劃線部分包含謂語動詞時,用疑問詞代替劃線部分放到句首,原劃線處應加上doing) 如:Tom is reading books in his study . Tom is reading books in his study . Is Tom reading books in his study ? Is Tom rea