新概念英语青少版4A：Unit 20 One man in a boat 课件（10张PPT）

课件10张PPT。Unit 20 One man in a boatListening and Understanding Fishing is my favorite sport. I often fish for hours without catching anything. But this does not worry me.Listening and Understanding Some fisherman are unlucky. Instead of catching fish, they catch old boots and rubbish.Listening and Understanding I am even less lucky. I never catch anything – not even old boots. After having spent whole mornings on the river, I always go home with an empty bag.Listening and Understanding ‘You must give up fishing!’ my friends say. ‘It’s a waste of time.’ But they don’t realize one important thing. I’m not really interested in fishing. I am only interested in sitting in a boat and doing nothing at all!Guided ConversationNo, it doesn’t.
Yes, I do.
No, they aren’t.
Yes, they, are.
Old boots and rubbish.
Because I never catch anything.
On the river.
With an empty bag.
Give up fishing.
It’s a waste of time.
One important thing.
Sitting in a boat and doing nothing at all.Guided ConversationFishing is the writer’s favorite sport. Some unlucky fishermen catch old boots and rubbish. The writer is not so lucky. He never catches anything. He is not really interested in fishing. Sitting in a boat and doing nothing at all is the only thing that interests him.Pattern Practicebe keen on
give up
without
Congratulations sb. on doing sth.Key Structuresa 动名词可作名词使用，直接作句子的主语，不定式也可以作句子的主语，但是通常用it做形式主语
Driving fast is dangerous.
It is dangerous to drive fast.
To drive fast is dangerous.(少见)
b 紧跟在介词后的动词必须用动名词形式，例如：
He’s keen on cycling.
She’s afraid of staying late in the shop.
Key Structuresc Ⅰ注意without, after, before+动名词的用法，例如：He left without paying.
Ⅱ比较： I must apologize for interrupting you(此刻) / having interrupted you.(之前)
再比较：After looking/ having looked at his watch, he hurried away.
这里的两种形式没有区别，因为这两个动作有明显的先后。
现在，请比较: He congratulated me on winning/ having won the competition.
这里的doing和having done两种形式含义稍有区别，用winning表示前后两个事情衔接比较紧密，而用having won表示前后两个事情间隔较长。
Ⅲ on +动名词，例如：On hearing the news, she fainted.= When she heard the news, she fainted.
Ⅳ 注意词语not的位置，例如： I apologize for not letting you know earlier.