新概念英语第三册-Lesson 34（课文4）

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7.To do this, he must be at least as knowledgeable as the dealer.
to do this : in order to discover a rarity
8.Like a scientist bent on making a discovery, he must cherish the hope that one dayhe will be amply rewarded.
bent on / upon : 决心于,adj.短语作定语修饰scientist
Ex
He is bent on winning the game.
He is bent on becoming a bridge player.
近义表达
be bent on doing sth / be determined on doing sth / be devoted to / be engaged in
9.He has often described to me how he picked up a masterpiece for a mere $50.
for :花费
A mere : only
10.He found a great deal to interest him.
He found a lot of interesting things.
这2个句型要求背诵
11.The morning passed rapidly and Frank was about to leave when he noticed a large packing case lying on the floor.
be about to do sth:将要，正打算
be about to ...when ( /at the moment ).......:表示正要或刚要干什么，突然
Ex
I was about to leave when the telephone rang.
He was about to lock door when his friend visited him.