Jason老師今天和大家一起探討完成式分詞的用法：
如果2個(gè)動(dòng)作先后發(fā)生宗苍，
She bought a bike and cycled home.
可以改寫(xiě)成：Having bought a bike, she cycled home.
一個(gè)動(dòng)作已經(jīng)持續(xù)一定時(shí)間后，第二個(gè)動(dòng)作開(kāi)始：
He had been living there for such a long time that he didn't want to move to another town.
可以變成： Having lived there for such a long time, he didn't want to move to another town.
完成式分詞可以用在主動(dòng)語(yǔ)態(tài)也可用在被動(dòng)語(yǔ)態(tài)：
Having cooked, he set the table.主動(dòng)
Having been cooked, the food looked delicious.被動(dòng)
使用分詞從句時(shí)要注意：
2個(gè)從句必須擁有一個(gè)主語(yǔ)
主要信息放在主句中玻熙，次要信息放在分詞從句中
確保分詞的形式是正確的咆疗，現(xiàn)在分詞，過(guò)去分詞還是完成式分詞
連接詞as, because, since 和關(guān)系代詞 who, which通常就被拿掉了：
As she didn't have a boyfriend, she flirted with every guy she met.
變成Not having a boyfriend, she flirted with every guy she met.
A friend who helps you in need is a good friend indeed.
變成A friend helping you in need is a good friend indeed.
連接詞before, when常用在分詞從句中
Before he left the house, he switched off the lights.
變成Before leaving the house, he switched off the lights.
When I travel around Ireland, I always stay in youth hostels.
變成When travelling around Ireland, I always stay in youth hostels.
連接詞是after, while 時(shí)
After I had dropped him at the station, I drove straight to the supermarket.
變成Having dropped him at the station, I drove straight to the supermarket.
While she was preparing dinner, she cut her finger.
變成While preparing dinner, she cut her finger.
主語(yǔ)不一致時(shí)，結(jié)構(gòu)是：
Iheardhim playingthe guitar. 同樣的動(dòng)詞還有feel, find, hear, listen to, notice, see, smell, watch
有一種情況叨恨，不常用，卻很正式的書(shū)面表達(dá)：
2個(gè)句子的主語(yǔ)都很明確 Mrs Jones went to New York. Mr Smith took up her position.
如果把2個(gè)句子變成一個(gè)句子挖垛。(With)Mrs Jones going to New York, Mr Smith took up her position.
給大家?guī)讉€(gè)句子做練習(xí)痒钝，把它們變成分詞從句的形式：
The boy asked his mother's permission and then went out to play.
She filled the washing machine and switched it on.
I had not ridden a horse for a long time and found it very difficult to keep in the saddle.
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