3.一Is there an express to Beijing tonight?
-There______be,but you'd better call the booking office Io make sure.(  )
A.canB.mightC.willD.must

分析 --今晚有到北京的快車嗎?
--也許有,但是你最好打電話到售票處確認(rèn)一下.

解答 答案是B.本題考查情態(tài)動(dòng)詞表示推測.can/could表示推測往往出現(xiàn)在否定句或疑問句中;在肯定句中出現(xiàn)時(shí)表示"客觀上、理論上的可能性",常常暗示可能性很小,與一般情況不相符.may/might表示推測往往出現(xiàn)在肯定句或否定句中表示不太肯定是推測"也許";情態(tài)動(dòng)詞will表示"愿意;常常;準(zhǔn)是"; 情態(tài)動(dòng)詞must表示推測只能出現(xiàn)在肯定句中,表示有客觀依據(jù)的推測"準(zhǔn)是,一定是".本題中由下文中的"你最好打電話到售票處確認(rèn)一下",說明說話人不肯定的態(tài)度,所以答案是B.

點(diǎn)評 要在正確理解情態(tài)動(dòng)詞的基本含義的基礎(chǔ)上,整體理解語境中的情感態(tài)度,做出合理的判斷

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