九、通過對比關系，鎖定目標

　　句中如含有though\althought\but \however\while等表示對比關系的詞時，我們就可根據前后的關系確定正答案。

　　1. They wanted to charge $5000 for the car, but we ______to bring the price down.

　　A. tried B. managed C. failed D. had

　　析：根據轉折關系得知“設法做成了……”，故選B。

　　2.---I think George does't really care for TV plays.

　　---Right, _____ he still watches the program.

　　A. and B but C. or D. so

　　析：通過前后內容對比，“不喜歡看電視劇”與“仍然”是轉折關系，故用but.

　　十、掌握固定句型，許多問題可迎刃而解

　　鼓勵學生自己歸納在學習中常見的一些固定句式，這對于提高單選題的準確率及書面表達的規范性都有好處。如，“祈使句 +and\or + Sb. will ......”; “It +be +some time +before ......”;“It wasn't until......that......”等。

　　The flu is believed_____by viruses that like to reproduce in the cells inside the human nose and throat.

　　A. causing B. being caused C. to be caused D. to have caused

　　析：“Sth.\Sb. be said \believed to +V......”為固定句式，再結合“by”判斷這里應用被動，故選C。