外研版九年級英語下冊總復習資料
it is important to eat _____ _______ right things,_____ _______, fruit , vegetables , and to _______ fast food or sweet things _________something very special –maybe just______ ____ ________.
15. 許多青少年通過吸煙和吸毒給健康造成的危害比別的危險更大，想一想它給你的家庭、朋友帶來的影響吧，
more teenagers damage their health ___________smoking and taking drugs than ________ ______ _________. _______ __________ the effect ________ your family and friends,
16.當農民們在田野里勞動時，他們同時也在通過勞動保持健康，但如今大部分人都不再從事相同的體力勞動了。
when farmer were working in the fields, they were______ _________at the same time , but most people don’t do the same kind of ________ ___________ today .
四、重點語法
情態動詞的用法歸納
在選擇情態動詞時我們必須從意思的表達和語境上考慮。先從意思表達方面對情態動詞作一總結：
1）表“能力”。
當表示一個人能、會做某事時， 常用can ,could ,有時可以和be able to do sth ”進行轉換。如：
my 5—year-old daughter ______ draw a beautiful picture in 5 minutes .
=my 5—year –old daughter___ _______ _______ draw a beautiful picture in 5 minutes.
2）表“可能性、猜測”
如表示某事肯定發生，用must表“一定、肯定”，如：
如表示某事可能要發生或不太可能發生，用“may, might, can ,could 等,表“可能”如：
如表示某事肯定不會發生，用“can’t”,表“肯定不是—”，如：
he ________ be at home , he has gone abroad .
it _________ be tom’s book , look , his name is on the cover .
he ________ stay in the office because the light is on now .
3）表“許可”或“征求對方許可”
如果是允許某人做某事，或征求對方的許可，可以用“may, might, can ,could”，
表“可以”
wen you are free , you ________ go fishing by the river .
----_____ i sit here ? ------sure , sit down please 。
4）表示“命令、禁止、不得不”
表示“命令、禁止、不得不”之類的含義時一般用must ,mustn’t ,have to 等，如：
you________ swim in this river , because it is too deep and dangerous .
you ________ be careful when you go across the street .
my brother is ill in bed ,so i ___________take care of him at home .
5）表示“沒必要”
表示“沒必要”不必做某事時，常用needn’t ,don’t have to ,或用“it isn’t necessary to do
sth ”或“there is no necessity to do sth “的句型。如：
you __________ worry about money , i can lend you in the time of need .