V-ing的用法: 主语 x Swimming is good for health Raising(raise) your hat to a a lady is good manners 对一位女士脱帽致敬是礼貌的。 x Being killed (kill) by sharks in the sea is a common thing
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 . Raising Being killed
2.作表语 ☆ Teaching is learning. 教学相长 ☆ My hobby is making (make model planes. a What worried the child most was not being al(. allow) to visit his mother in the hospital
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 . making not being allowed
大家注 意了 1)V-ing形式和不定式都可表为 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
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！
注意 2)Vg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Ving形式时,表语也用v-ing 形式。 To see is to believe。 Seeing is believing
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 t作形式主语,只用ving,不用不定式 X 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 talking talkto him It is important for me to learn (learn) English
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 . talking to learn