【正文】 需用情態(tài)動詞can’t。needn’t不必，指沒必要；can’t不能，指不能夠；shouldn’t不應該，表建議；mustn’t不能，表禁止。我不能很好地聽清楚發(fā)言者的話。故選A。needn’t不需要；mustn’t禁止；shouldn’t不應該；can’t不能。你可以在晚飯后做。故選A。must必須；can能夠；may可以；could能夠。12．A解析：A【詳解】句意：你必須重新寫報告，因為根本不允許有拼寫錯誤。mustn’t不準；needn’t不需要；couldn’t不可能；wouldn’t將不會。這是違法的。故選A。Could能、會（用在問句中表示委婉語氣）；Should應該；Need需要；Must必須?！獩]問題。can能；may也許；would就會；should應該；根據(jù)“It’s of great importance to protect the environment”保護環(huán)境非常重要；可知此處指“大家都應該積極參與”，表責任、義務；故選D。我們每個人都應該積極參與其中。故選D。mustn’t不能，表禁止；shouldn’t不應該，表建議；needn’t不必，指沒有必要；can’t不能，表沒有能力或不許可。8．D解析：D【詳解】句意：我們的化學老師總是告訴我們考試前怎樣用功都不為過。根據(jù)“I’ll call if there’s any problem”可知，是說話人按照事實有一定依據(jù)的推測，用should符合語境?？疾榍閼B(tài)動詞辨析。故選C。mustn’t禁止；should應當；can會、能；needn’t不需要。我馬上把火撲滅。6．C解析：C【詳解】句意：——小心！火有時候會很危險。may也許；may not也許不；must一定；can’t不能。她總是這個時候回家。5．C解析：C【詳解】句意：——有人敲門。mustn’t禁止；shouldn’t不應該；needn’t不必；can’t不能。4．D解析：D【詳解】句意：——高中入學考試快到了! ——是的，我們老師告訴我們考試時再怎么仔細都不為過。can’t不能；needn’t不必；mustn’t禁止；may not可能不會。他們可以有更多的時間為旅行做準備。故選B。need需要；may可能；should應該；must一定。汽車可能撞到你。故選A。must一定，必須；may也許；can能夠；need需要。 for33．Look at the floor, Tom! ________ you watch TV while having a meal?A．Should B．Could C．Must D．May34．Sometimes smiles ________ be false, hiding other feelings like anger, fear or worry.A．should B．would C．must D．can35．— The sandstorm in Beijing is so serious this year.— Yes, I wonder when we ________ worry about the air we breathe.A．can’t B．mustn’t C．needn’t D．shouldn’t36．—How beautiful the winter jasmines (迎春花) are!—Yes. These goldenyellow flowers ________ be widely seen in my city in March.A．must B．can C．would D．should37．—In China, many students have to stay up late to do their homework.—No worries. The government has realized the problem. I’m sure there ________ be good news soon.A．can B．should C．must D．need38．—May I have some wine to drink?—No, you ________. You have to drive home later.A．mustn’t B．needn’t C．can’t D．may not39．—________ I see your ID card? We have to check your personal information. —Sure. Here you are.A．May B．Need C．Should D．Must40．—Is it usually warm in Yancheng in May??—Yes. But it _______ be rather cold sometimes.A．must B．should C．would D．can【參考答案】一、選擇題1．A解析：A【詳解】句意：鍛煉是有幫助的但是它必須是有規(guī)律的鍛煉。 of C．Yes, we must。t20．—Dad, must we wait until the light bees green? —Yes, I am afraid we ________. That’s the traffic rule.A．may B．can C．have to D．need21．You ________ pay too much attention to protecting yourself if you plan to go abroad.A．mustn’t B．can’t C．shouldn’t D．needn’t22．— Listen! Tom _