1、I stayed at the top and watched them.动词ing形式的否定式是在其前加not；动词-ing形式的完成式为 形式的被动式为 :动词ing形式的完成被动式为_n聚焦v-ing形式作状语v-ing形式作状语，可表示时间、原因、方式、伴随、条件等。试判断下面句子属于何种状语：1.She sat at the desk reading a news paper. （ ）2.Hang Wei went to school. taking a train. （ ）3.While reading the book, he nodded from time to time.
2、（ ）4.Not having received a reply, we wrote again. （ ）5.Heating water, we can change it into vapor. ）一、现杠分词短语作时间状语有以下情况：1.分词动作一发生，谓语动作紧跟着发生，这时用现在分词的一般式作时间状语，其逻辑 主语为句中的主语。常用 hear, see, arrive, return, eet to, look, open, close, leave, turn around, walk 等，表示一个极短暂动作。此种悄况可以换作on；动名词，表示相同的意思。译作“一（刚） 就二”。此种
3、悄况也可以换作是when引导的时间状语从句，该从句的动词多用一般过去时 表示。Hearing their teachers voice, the pupils stopped talking at once. I dont like him at all.Supposing he is ill, who will do the work?Generally speaking, boys are more interested in science than girls.（4）有些现在分词可以作介词用。如 concerningT considering, regarding, respecting 等。 Considering his nge, he is tall考虑到他的年龄，他个子商。I have nothing to say concerning his speech关于他的演讲，我无话可说。ni-ing形式的补充1.作以下及物动词及短语的宾语adviser suggest, risk. benr/sUind（忍受）,delay, stop, regretr miss, enjoy/appreciatcr excuse, escape avoid, consider, forbid, permit, mind, imagine finish, practi
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