A．單句填空

　　1．—Can't you stay a little longer?

　　—It's getting late. I really________ go now. My daughter is home alone.

　　答案　must　[句意：——你就不能多待一會兒嗎？——天越來越晚了。我現在真的必須走了。我女兒一個人在家里呢。根據答語中的“It's getting late.”以及“My daughter is home alone.”可知，這里表示必須離開，故用must。]

　　2．You________ be careful with the camera. It costs!

　　答案　must　[句意：你一定要小心這個相機。它很貴的！根據語境可知，此處表示“一定”，故用must。]

　　3．You________ feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.

　　答案　may　[句意：你可能感覺到所有的培訓都是浪費時間，但是我百分之百的確信最后你將感謝你所做的這一切。根據句子中的“but I'm a hundred percent sure later you'll be grateful you did it”可判斷出，表示對前面情況的一種推測，表示“也許，可能”，故用may。]

　　4．—I've prepared all kinds of food for the picnic.

　　—Do you mean we ________bring anything with us?

　　答案　needn't 　[句意：——我已經為野餐準備好了各種食物?！愕囊馑际钦f我們不必再帶任何東西了嗎？根據上下文可知此處表示“不必”，故用needn't。]

　　5．My book, The House of Hades, is missing. Who________have taken it?

　　答案　could　[句意：我的書《哈迪斯的房子》丟了，誰會把它拿走呢？根據句意可知此處表示推測，又因是疑問句，故用could。]

　　6．She often appears as a young girl on stage although she ________be at least 55 years old.

　　答案　must　[句意：在舞臺上，她經常像小女孩，雖然至少有55歲了。此處表示肯定推測，故用must。]

　　7．Being constantly exposed to advertisement is annoying, but it________be pleasant sometimes.

　　答案　can　[句意：經常接觸廣告很煩人，但有時也令人愉快。此處表示客觀的可能性，“有時會”，故用can。]

　　8．Liza________well not want to go on the trip—she hates traveling.

　　答案　may/might　[句意：莉莎很可能不想去旅游——她討厭旅游。根據設空處后的well可知本空填may/might。may/might well do sth.意為“很可能做某事”。]

　　9．One of the National Health Regulations is that public schools ________actively create conditions for sports facilities opened to the public.

　　答案　shall　[句意：全民健身條例內容之一是公立學校需積極創造條件向公眾開放體育設施。根據句意可知，此處表示規則、規定，且用于第三人稱肯定句中，故用shall。]

　　10．—Amazing! You________wear slippers at school.

　　—Don't you know it's a fashion?

　　答案　should　[句意：——太奇怪了，你竟然在學校穿拖鞋?！y道你不知道這很時尚嗎？根據語境表示一種驚訝，故用should。]

　　B．單句改錯

　　1．—Sorry, Mum! I failed the job interview again.

　　—Oh, it's too bad. You must have made full preparations.

　　________________________________________________________

　　答案　must→should　[句意：——對不起，媽媽，我工作面試又失敗了。——哦，太糟糕了，你本應該做充分準備。根據句意可知，此處表示“本應該做某事而實際上沒做”暗含對對方的責備，故用should，而must have done表示“過去一定做了……”，與句意不符。]

　　2．Sometimes people simply mustn't trust anymore.

　　________________________________________________________

　　答案　mustn't→can't　[句意：有時候人們只是不能再相信(他人)了。can't不能，符合句意。mustn't不準；禁止。]

　　3．Although you must find bargains in London, it's not generally a cheap place to shop.

　　________________________________________________________

　　答案　must→can　[句意：雖然你在倫敦可能會買到減價品，但通常那兒不是一個能買到便宜貨的地方。must意為“一定”，此處表示客觀的“可能性”，故把must改為can。]

　　4．Should I have a word with you? It won't take long.

　　________________________________________________________

　　答案　Should→Can/May　[句意：我可以和你說句話嗎？不會耽誤很長時間。根據句意可知此處表示請求，“可以”，should為應該，故把Should改為Can/May。]

　　5．Life is unpredictable; even the poorest must become the richest.

　　________________________________________________________

　　答案　must→may/might　[句意：生活是不可預測的，即使是最貧窮的人也可能成為最富有的人。根據句意可知本空表示把握性不大的推測，故把must改為may/might可能。]

　　6．—These grapes look really beautiful.

　　—They can! See the price $3.99 a pound. Very expensive, aren't they?

　　________________________________________________________

　　答案　can→should　[句意：——這些葡萄看起來很漂亮?！鼈儜撨@樣！看價錢，3.99美元一磅，太貴了，是不是？根據句意可以猜出葡萄看起來好是應該的，因為價格貴。]

　　7．I mustn't thank you too much because without your help I wouldn't have won the first prize.

　　________________________________________________________

　　答案　mustn't→can't　[句意：我都不知道該怎么謝你了。沒有你的幫助我不會獲得一等獎。can't與too連用，意為：再……也不為過。]

　　8．Nuclear energy must be really dangerous at times even though it's a kind of nice energy in general.

　　________________________________________________________

　　答案　must→can　[句意：盡管核能在總體上是一種不錯的能源，但它有時可能真的會很危險。can用于肯定句可表示客觀上的可能性，意為：有時會，可能會。]

　　9.We can't imagine that two children shall be killed by the washing machine of their house.

　　________________________________________________________

　　答案　shall→should　[句意：我們無法想象兩個孩子竟然被家里的洗衣機絞死了。should表示“竟然”。]

　　10．One of our rules is that every student must wear school uniform while at school.

　　________________________________________________________

　　答案　must→shall　[句意：我們的規定之一是學生在學校時需要穿校服。在明文規定中，常使用shall來表示規定做的事情。]

　　A．單句填空

　　1．—Can't you stay a little longer?

　　—It's getting late. I really________ go now. My daughter is home alone.

　　答案　must　[句意：——你就不能多待一會兒嗎？——天越來越晚了。我現在真的必須走了。我女兒一個人在家里呢。根據答語中的“It's getting late.”以及“My daughter is home alone.”可知，這里表示必須離開，故用must。]

　　2．You________ be careful with the camera. It costs!

　　答案　must　[句意：你一定要小心這個相機。它很貴的！根據語境可知，此處表示“一定”，故用must。]

　　3．You________ feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.

　　答案　may　[句意：你可能感覺到所有的培訓都是浪費時間，但是我百分之百的確信最后你將感謝你所做的這一切。根據句子中的“but I'm a hundred percent sure later you'll be grateful you did it”可判斷出，表示對前面情況的一種推測，表示“也許，可能”，故用may。]

　　4．—I've prepared all kinds of food for the picnic.

　　—Do you mean we ________bring anything with us?

　　答案　needn't 　[句意：——我已經為野餐準備好了各種食物?！愕囊馑际钦f我們不必再帶任何東西了嗎？根據上下文可知此處表示“不必”，故用needn't。]

　　5．My book, The House of Hades, is missing. Who________have taken it?

　　答案　could　[句意：我的書《哈迪斯的房子》丟了，誰會把它拿走呢？根據句意可知此處表示推測，又因是疑問句，故用could。]

　　6．She often appears as a young girl on stage although she ________be at least 55 years old.

　　答案　must　[句意：在舞臺上，她經常像小女孩，雖然至少有55歲了。此處表示肯定推測，故用must。]

　　7．Being constantly exposed to advertisement is annoying, but it________be pleasant sometimes.

　　答案　can　[句意：經常接觸廣告很煩人，但有時也令人愉快。此處表示客觀的可能性，“有時會”，故用can。]

　　8．Liza________well not want to go on the trip—she hates traveling.

　　答案　may/might　[句意：莉莎很可能不想去旅游——她討厭旅游。根據設空處后的well可知本空填may/might。may/might well do sth.意為“很可能做某事”。]

　　9．One of the National Health Regulations is that public schools ________actively create conditions for sports facilities opened to the public.

　　答案　shall　[句意：全民健身條例內容之一是公立學校需積極創造條件向公眾開放體育設施。根據句意可知，此處表示規則、規定，且用于第三人稱肯定句中，故用shall。]

　　10．—Amazing! You________wear slippers at school.

　　—Don't you know it's a fashion?

　　答案　should　[句意：——太奇怪了，你竟然在學校穿拖鞋。——難道你不知道這很時尚嗎？根據語境表示一種驚訝，故用should。]

　　B．單句改錯

　　1．—Sorry, Mum! I failed the job interview again.

　　—Oh, it's too bad. You must have made full preparations.

　　________________________________________________________

　　答案　must→should　[句意：——對不起，媽媽，我工作面試又失敗了?！?，太糟糕了，你本應該做充分準備。根據句意可知，此處表示“本應該做某事而實際上沒做”暗含對對方的責備，故用should，而must have done表示“過去一定做了……”，與句意不符。]

　　2．Sometimes people simply mustn't trust anymore.

　　________________________________________________________

　　答案　mustn't→can't　[句意：有時候人們只是不能再相信(他人)了。can't不能，符合句意。mustn't不準；禁止。]

　　3．Although you must find bargains in London, it's not generally a cheap place to shop.

　　________________________________________________________

　　答案　must→can　[句意：雖然你在倫敦可能會買到減價品，但通常那兒不是一個能買到便宜貨的地方。must意為“一定”，此處表示客觀的“可能性”，故把must改為can。]

　　4．Should I have a word with you? It won't take long.

　　________________________________________________________

　　答案　Should→Can/May　[句意：我可以和你說句話嗎？不會耽誤很長時間。根據句意可知此處表示請求，“可以”，should為應該，故把Should改為Can/May。]

　　5．Life is unpredictable; even the poorest must become the richest.

　　________________________________________________________

　　答案　must→may/might　[句意：生活是不可預測的，即使是最貧窮的人也可能成為最富有的人。根據句意可知本空表示把握性不大的推測，故把must改為may/might可能。]

　　6．—These grapes look really beautiful.

　　—They can! See the price $3.99 a pound. Very expensive, aren't they?

　　________________________________________________________

　　答案　can→should　[句意：——這些葡萄看起來很漂亮?！鼈儜撨@樣！看價錢，3.99美元一磅，太貴了，是不是？根據句意可以猜出葡萄看起來好是應該的，因為價格貴。]

　　7．I mustn't thank you too much because without your help I wouldn't have won the first prize.

　　________________________________________________________

　　答案　mustn't→can't　[句意：我都不知道該怎么謝你了。沒有你的幫助我不會獲得一等獎。can't與too連用，意為：再……也不為過。]

　　8．Nuclear energy must be really dangerous at times even though it's a kind of nice energy in general.

　　________________________________________________________

　　答案　must→can　[句意：盡管核能在總體上是一種不錯的能源，但它有時可能真的會很危險。can用于肯定句可表示客觀上的可能性，意為：有時會，可能會。]

　　9.We can't imagine that two children shall be killed by the washing machine of their house.

　　________________________________________________________

　　答案　shall→should　[句意：我們無法想象兩個孩子竟然被家里的洗衣機絞死了。should表示“竟然”。]

　　10．One of our rules is that every student must wear school uniform while at school.

　　________________________________________________________

　　答案　must→shall　[句意：我們的規定之一是學生在學校時需要穿校服。在明文規定中，常使用shall來表示規定做的事情。]