一. 含义动词的-ing形式是非谓语动词的一种形式,不能单独充当谓语。二. : 动词原形+-:①一般情况,直接+ing;②以不发音的e结尾,去e+ing;③以重读闭音节结尾,末尾只有一个辅音字母的动词,双写这个辅音字母再加ing;④以ie结尾,变ie为y,+ing,例:die,dying;lie,:-ing形式具有名词、. 动词的-ing形式由动词变来,所以保留了动词的某些特征,如它可以有自己的宾语, enjoys listening to violin music, playing mah-jong, swimming :动词的-ing :具有动词的特征,可以表示一个正在进行的、:doing 为非谓语动词,由do原形+ing 构成,不能单独充当谓语,可以充当 2. 宾语 4. 定语 。doing现在分词动名词具有名词,动词的特性具有adj.,√√√√√√√√× ×××做主语和宾语的肯定是_________;做状语和宾补的肯定是__________。Examples:1)Seeing is believing.(动名词做主语和宾语)2)Be careful while crossing the street.(现在分词做时间状语)3)I heard her singing an English songwhen I passed by her room yesterday.(现在分词做宾语补足语): then, finding ways to grow more ricehas been his life . Spending money on himself or leading acomfortable life also means very little to dreaming for things, however, . 用法:小结::单个的动词-ing形式作主语,谓语动词用单数。:1)doing 作主语句型: Doing …. + V + O2)但有些含有动名词的句型,为避免句子主语太长,通常用it作形式主语,-ing形式作真正的主语。下面列举几种最常见的句型:Eg. It’s no use crying over spilt (倾倒出)milk.① It +be +no good /use doing…做…无益/无用It’s a waste of time thinking hard about the past.②It +be +a waste of time doing…做…是浪费时间The book is worth reading.③It +be +worth doing …做…值得There is no harm in doing so.④There +be +no +n. +in +doing …做…没有…2. 作宾语(动词宾语和介词宾语)He finished reading the book enjoy learning English. (动词宾语)I am fond of watching TV.(介词宾语)动词+宾语①只接doing②只接to do③doing和to do皆可,意义区别很大④doing和to do皆可,意义区别不大
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