10．-What do you think of Betty？
-Lovely，though she ______ be naughty sometimes（　�。�
A．shouldB．mustC．canD．need

分析 ---你認(rèn)為Betty怎么樣？---很可愛，雖然她有時會有些頑皮．

解答 答案C． A should 應(yīng)該；想必會，理應(yīng)；B must 必須，一定；C can 能，會，可能； D情態(tài)動詞 need，通常用在疑問句、否定句中，意為"必須"；句中描述的Betty應(yīng)該是一個可愛但有時會有些調(diào)皮的女孩．結(jié)合句意，此處應(yīng)該是填一個表示推測的情態(tài)動詞，can用于肯定句，表示理論上存在的可能性，所以適用于本句；should，must都可以表示推測，但在這里不合語意．故選C

點評 情態(tài)動詞表示推測的這一用法經(jīng)常被考到，所以要注意總結(jié)它們之間的區(qū)別．

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