一、聲學(xué) 物因振動而發(fā)聲,振動停止停發(fā)聲。m hungry. B: What did you say? 我餓了。 5. 用在對話中重復(fù)對方剛提到的事。 . Father promised to buy me a new bike when he got/would get his pay the next 。 The doctor reported, The patient is very well.The doctor reported that the patient was very well. 醫(yī)生說患者情況良好。 . She said, I39。 In the past few years, Mary seldom called her grandfather. 過去幾年中,瑪麗很少給她爺爺打電話。He often turns off TV after midnight. 2. 表示過去反復(fù)發(fā)生的或習(xí)慣性的動作,常和never, often, usually等狀語連用。 He turned off TV at midnight. 他午夜才關(guān)了電視。) 一、一般過去時的用法: 解說:一般過去時最明顯的現(xiàn)象就是常由表達過去之時間的副詞或副詞短語來修飾它(如各例句的斜體字部分)。) 例B:Mr. Smith bo