Unit 1 Cultural Relics

 should(n’t) have done 本來（不）應該做（卻做了）
 ought(n’t) to have done
2.when heated 是when it is heated 的省略形式。狀語從句中，若其主語和主句的主語一致，同時謂語動詞含有系動詞be, 或it is/was結構，可省去該從句的主語和系動詞be，留下其余部分。
3.once 為從屬連詞，意為“一旦”once you see it, you’ll like it.
4.    be made into 被制成
    由……制成（能看出原材料）
    由……制成（看不出原材料）
    由……組成/構成
    產(chǎn)于，生產(chǎn)于（某地/某時）
5. “be + of + 名詞(詞組)” , 表示主語的某種形狀、 特性或特征。
e.g. i’m pleased to have been of help to you.
 all of the boys in the class are of the same age.
6. fancy vt. 想象,推測,假想
fancy + that-/one’s doing sth./sb. to be…/sb. as/sth./doing sth.
1) don’t fancy that you can succeed without hard work.
2) i can’t fancy his doing such a thing.
3) i fancied him to be dead.
4) he fancies himself as a good writer.
5) do you fancy a glass of coffee?
6) i don’t fancy walking in the rain.
7. in return (for): 回報,作為報酬
what can we do for them in return for all the help they have given us?
i gave him some books in return for his assistance.
in turn 輪流地,依次; 反過來 
take turns輪流地
by turns 輪流地,時而…時而…
8. serve as 擔任，充當
 he served as a waiter there.
 when you sleep in the open, old newspapers can serve as a blanket.
9. add…to…把……加進……里去
  he added that he was very pleased with our work.
  please add some sugar to the milk.
  add the score up.
  his being absent added to our difficulty.
  the money he spent one day added up to about $100.
10. she wanted it 是定語從句修飾 the way, 后面的關系代詞可用that / in which / -
she cooks chicken in the way i like.
11.at war 處于戰(zhàn)爭狀態(tài)，介詞at可表示狀態(tài)或動作。
    at peace            at breakfast    
    at rest               at table
    at work             at school
    at the piano      at one’s best
12. there is no doubt= it’s clear= it’s beyond argument
there is no doubt 后接名詞時，需用介詞 about / of ,
eg. there is no doubt about / of his honesty.
doubt 也可作不及物動詞，“懷疑，不信”, 在肯定句中常接whether / if 從句，在否定句中常接 that 從句
eg. i doubt whether we can get the first place in the competition.