1. “Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”

　　A. shall B. will C. would D. can

　　【陷阱】幾個干擾項均有可能誤選。

　　【分析】最佳答案選A。shall 用作情態(tài)動詞主要有以下兩個用法：

　　(1) 用于疑問句中征求意見。如：

　　Shall I help you? 要不要我?guī)蛶湍?

　　Shall I open the window? 要我把窗子打開嗎?

　　(2) 用于陳述句中表示允諾、告誡、警告、威脅、命令、規(guī)定、必然性等(可用于各類人稱)。如：

　　You shall suffer for this. 你會為此事吃苦頭的。(表威脅)

　　Each competitor shall wear a number. 每個參賽者要戴一個號碼。(表規(guī)定)

　　You shall hear everything as soon as you come. 你一來就可聽到所有情況了。(表允諾)

　　請做以下試題(答案均選 shall)：

　　(1) “I promise that she _________ get a nice present on her birthday.” “Will it be a great surprise to her?”

　　A. should B. must C. would D. shall

　　2. You _________ pay too much attention to your reading skill, as it is so important.

　　A. cannot B. shouldn’t C. mustn’t D. needn’t

　　【陷阱】幾個干擾項均有可能誤選。

　　【分析】最佳答案選A。cannot…too…是英語中一個十分有用的表達(dá)，意為“不可能太……，無論怎樣……也不算過分，越……越……”。如：

　　You can’t be too careful. 你越仔細(xì)越好。

　　You can’t praise the too much. 這本書值得大加贊揚(yáng)。

　　We cannot work too much for the people. 我們?yōu)槿嗣褡龉ぷ魇遣豢赡茏鲞^頭的。

　　A woman cannot have too many clothes. 女人買的衣服再多也不算多。

　　注：有時也可用 can never, impossible 等與too連用來表示類似意思。如：

　　It is impossible to get there too soon. 去那兒越早越好。

　　3. “Is John coming by train?” “He should, but he _________ not. He likes driving his car.”

　　A. must B. can C. need D. may

　　【陷阱】可能誤選B或C。

　　【分析】最佳答案為D。may 表推測，may not 意為“可能不(會坐火車來)”。句中的 He should 為 He should come by train 之省略，由于其后出現(xiàn)轉(zhuǎn)折連詞 but，說明語意有變化，再結(jié)合下文的 He likes driving his car，便可決定此題選D。注意，不能選B，因為can表示推測時通常不用肯定陳述句。

　　4. “I heard they went skiing in the mountains last winter.” “It _________ true because there was little snow there.”

　　A. may not be B. won’t be C. couldn’t be D. mustn’t be

　　【陷阱】幾個干擾項均有可能誤選。

　　【分析】此題最佳答案為C，主要由下文的 because there was little snow there 這一語境所決定，既然“沒下什么雪”，那么“滑雪”就應(yīng)是“不可能”，所以選 couldn’t be，即選C。