Grammar:  HELPING VERBS 助動詞

(1)    must 必要性 :  You must stop before a stop sign else you’ll be fined.

(2)    should建議 （某人應該。。。） :  My mother always tells me that I should not talk and eat at the same time.

(3)    will/ would 未來性 （將會）:  He will be famous one day.

        （*is going to） 

(4)    might可能性 :  I might go to France this summer.

(5)    can/ could 能力 （能/ 會）:  My sister can speak English, French, and Spanish.

        （*can 語言能力）       

(6)    may 禮貌用語 :  Sir, may I leave now?

　

Helping Verb Exercise

(1) Yes, Timothy is here.  ______ I ask who’s calling.

   (A) would     (B) should        (C) may            (D) must

(2) The salesman promised us that the broken sink _______ replaced the next day.

   (A) would     (B) can           (C) had better        (D) should have

(3) You ______ play on your electric guitar too loudly while people are sleeping.

   (A) wouldn’t   (B) don’t have to   (C) wouldn’t have to  (D) mustn’t

(4) He never comes in late.  He ______ have a good reason for his tardiness.

   (A) will       (B) does          (C) must           (D) can

(5) It’s getting cold.  You ______ probably wear a jacket.

   (A) had to     (B) must have      (C) should          (D) might have

(6) They were sold out, so we ________ get one.

   (A) cannot     (B) couldn’t        (C) should not      (D) must not

(7) My boss called to say he was on his way here.  He _____ here any minute.

  (A) must       (B) should         (C) can           (D) did

(8) We ______ leave right now.  Let’s go!

  (A) may       (B) must           (D) mustn’t        (D) might

(9) The building is under construction and _____ not ready for two months.

  (A) must       (B) will           (C) should         (D) does

(10) I ______ buy you a CD if I have enough money.

  (A) must       (B) does           (C) will     (D) would