B4U4 Grammar V-ing 作定、状语课前回顾和预习:1
在 B4U3 Grammar 中,我们学习了 V-ing 作___________,___________和_____________
什么叫做状语
一、 现在分词的形式变化现在分词由“动词+-ing”形式构成,在句子中可以作定语、表语、宾语补足语和状语
其否定形式是 “not doing”, 没有人称和数的变化, 但有时态和语态的变化
现在分词的基本形式如下: 语态时态主动形式被动形式一般式(not) doing( )_____________完成式( not )___________( )_____________eg: 1
Playing in the park, I met my friend Mary
Having finished his homework, he went out for a walk for a while
The building being built over there is our library
Having been shown around the Bird Nest, we were taken to the Water Cube
现在分词一般式(doing):表示的动作与谓语动词表示的动作同时发生 ; 完成式( ):表示动作_________谓语动词表示的动作发生
2) 练习:1
________ in the queue for two hours, John suddenly realized that he had left his money at home
To wait B
Have waited C
Having waited D
To have waited2
Sarah pre