现在分词作状语.ppt

She picked up the cat and rubbed its head affectionately.
Picking up the cat, she rubbed its head affectionately.
The bear came out of the bushes, showed its teeth and made a lot noise. Showing his teeth and making a loud noise, the bear came out of the bushes.
__2___3_ describe two things happening at
the same time
_1____4_ describe one thing happening
immediately after another
1. Putting down his shopping bag, Will held out his hand. 2. Will, still watching, saw the cat behave curiously. 3. He crossed the road, keeping his eyes on the spot where the cat had been investigating. 4. Pushing his shopping bag through, he scrambled through himself.
用法9： 为了强调结果，可在-ing形式前加副词thus e.g. The bus was held up by the snowstorm, thus causing the delay.
(= The bus was held up by the snowstorm, and as a result it caused the delay.)
用法5： 表示结果，常置于句末
e.g. The boy fell off his bike, breaking his right arm.
用法6： 表示方式或伴随,多置于句末，也可置 于句首。
e.g. 1) He sat at the table, reading a magazine.
2) Laughing and talking, they went into the room.
用法2： 表示原因，多置于句首或句末，也可置于
句中。 e.g. 1) Being ill, he didn’t go to school. = Because he was ill, he didn’t go to school.
2) She rang him up, hoping to get his support.
注意：
动词-ing 形式（现在分词）作状语 时，其逻辑主语必须与句子的主语 一致，且必须与句子的主语是逻辑 上的主谓关系，动词-ing 形式表示 的动作是次要动作。（一个主语多 个动作。）
Grammar 1–1. Choosing
Read the following sentences and make a choice.
用法10： 在-ing 形式短语前可用though/although 表
示让步
e.g. Though working very hard, he couldn’t make enough money to pay off his debt.
= Though he worked very hard, he couldn’t make enough money to pay off his debt.
3) Before going abroad, he lived here.
4) After watching TV, he went to bed.
用法8： 在-ing形式短语前可用介词on,表示“一……
就……” e.g. On arriving in Beijing, he went to see his uncle. (= As soon as he arrived in Beijing, he went to see his uncle.)
动词的-ing形式（现在分词）作状语
动词的-ing(现在分词）形式作 状语时，通常都表示主语正在进行 的另一动作，用来对谓语动词表示 的动作加以修饰或作为陪衬，它可 表示时间、原因、结果、条件、让 步、方式或伴随动作，相当于相对 应的状语从句。
用法1： 表示时间，多置于句首，也可置于句末。
e.g. Walking in the street, I met a friend of mine.=When I was walking in the street, I met a friend of mine.
用法7： 为强调与谓语动词的动作同时发生，在ing形式短语前可用连词when, while等； 为强调在谓语动词的动作之前或之后发生， 在-ing形式短语前可用连词before或after e.g. 1) Be careful when crossing the road.
2) Don’t laugh while eating.
Grammar 1-2. Rewrite the
sentences
1.The witቤተ መጻሕፍቲ ባይዱh leapt into the air and vanished.
Leaping into the air, the witch vanished.
2.The man shouted angrily and waved his sword at the stranger. Shouting angrily, the man waved his sword at the stranger.
用法3： 表示条件，多置于句首
e.g. Working hard, you will succeed.
用法4： 表示让步，多置于句首
e.g. Being poor, the old man was happy.
= Though the old man was poor, he was happy.