新课标人教版课件系列《高中英语》选修 ( 模块) 7-3.5 Under the seaUnder the sea GrammarGrammar --- V ing--- V ing Under the seaUnder the sea GrammarGrammar --- V ing--- V ing 一 : V-ing 形式由 “ do + ing” 构成,其否定形式是 “ not doing”, V-ing 可以带宾语或状语构成 V-ing 短语,没有人称和数的变化,但有时态和语态的变化。GrammarV-ing 形式 语态时态 主动形式 被动形式一般式完成式(not) doing(not) being done(not)having done(not)having been done二 : V-ing 可作主语、宾语、表语 ; 定语、状语和宾语补足语,但不能单独作谓语。 V-ing 形式表示的动作与主要动词同时发生或发生在主要动词之后,用其一般式 ; V-ing 形式表示的动作在主要动词之前发生,用其完成时,在具体应用中也常以一般式代替完成式。V-ing 的用法: 1. 作主语 ★ Swimming is good for health. ★ ___________ (raise) your hat to a a lady is good manners . 对一位女士脱帽致敬是礼貌的。 ★ ____________ (kill) by sharks in the sea is a common thing .RaisingBeing killed 2. 作表语 ☆ Teaching is learning. 教学相长. ☆ My hobby is __________ (make) model planes. ☆ What worried the child most was _________ (not, allow) to visit his mother in the hospital .makingnot being allowed 1). V-ing 形式和不定式都可表示比较抽象的一般性的行为;而表示具体的某次动作,尤其是将来的动作时,多用不定式。 To obey/Obeying the law is everyone’s duty.大家注意了!大家注意了! 2). V-ing 形式和不定式都要有对称性 ; 当主语是不定式时,表语也用不定式;反之,当主语是 V-ing 形式时,表语也用 V-ing 形式。 To see is to believe. = Seeing is believing.注意 3). It’s no use (good) doing sth It’s a waste of time doing sth it 作形式主语 , 只用 V-ing, 不用不定式。 ※It is + adj. + (for sb ) to do sth It is no use crying over spilt milk. 覆水难收。 It is a waste of time ___________ (talk) to him . It is important for me _______________ (learn) English .talki...