高二英語必修五重點單詞和短語

　　12. employ v. 1) to give work to sb

　　2) make use of sb/sth; occupy time, attention etc.

　　The mill employs a thousand workers

　　How do you employ your spare time?

　　The children employed themselves in painting.

　　13. polish. V. 1) improve sth by correcting, making small changes

　　2) cause sth to become smooth and shiny by rubbing

　　He polished his spectacles with a handkerchief before answering.

　　The speaker spent several days polishing her lecture.

　　You should use wax polish on wooden furniture.

　　Give your shoes a polish.

　　14. approve v. say or feel that sth is good or acceptable or satisfactory.

　　The professor does not approve the government's foreign policy

　　The city council has now approved the scheme for the erection of a new public library.

　　I'm afraid your parents won't approve of your going there.

　　15. convenient adj. 1) suited to one’s needs

　　2) suited nearby; easy to reach

　　Please come whenever it is convenient to you.

　　Will it be convenient for you to come?

　　Useful expressions

　　1. find out 1) learn sth by study or inquiry

　　2) discover sb who has done wrong, lied etc.

　　The police found the murderer out.

　　Please find out when the train starts.

　　2. fill in 1) add what is necessary to make sth complete

　　2) give sb full details about sth

　　Fill in the blanks with suitable words.

　　Can you fill me in on what has been happening?

　　3. be to do sth 1) expressing duty, necessity etc.

　　2) expressing arrangement or intention

　　3) expressing destiny

　　You are to report to the police.

　　They are to be married.

　　The book was not to be found.

　　4. on one’s own 1) alone

　　2) without help

　　3) excellent

　　I can't carry it on my own; it's too heavy.

　　I’m all on my own today.

　　When it comes to maths, Mary is on her own.

　　5. the first time 1) do sth for the first time

　　2) 引導時間狀語

　　I went to Bejing in 1980 for the first time.

　　The first time Peter went to Paris, he wasn’t used to living there.

　　6. concentrate on sth : focus one’s attention, effort etc

　　We must concentrate our attention on efficiency.

　　Our population is concentrated in the big cities.

　　7. tricks of the trade: clever ways known to experts

　　If you want to start your own car business, you should ask his advice. He knows all the tricks of the trade.

　　8. look forward to : hope for, long for, expect

　　They are looking forward to her visit.

　　I am looking forward to seeing you again.

　　The day we looked forward to come at last.

　　9. get absorbed in : get buried in or get devoted to

　　The old man was utterly absorbed in the book.

　　Tom does not get absorbed in his business for long.

　　10. defend …against/from: protect sb/sth from/against harm, guard sb/sth

　　They defended the city against air attacks.

　　When the dog attacked me, I defended myself against it with a stick.