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例 Which do you enjoy to kill your spare time— watching TV or playing football? ⑤ 疑問詞 +to do 的用法。 2: .(0429) — Isn’t that Ann’s husband over there? — No, it ____be him— I’m sure he doesn’t wear glasses. A. can’t B. must not C. won’t D. may not can’t 表不可能,語氣肯定,破折號加以注釋,據(jù)題意,選 A。 [難點剖析 ] must\can’t \shouldn’t \needn’t \ought to\etc.+ have done 的意義及用法; shall 用于二、三人稱表允諾,命令,警告,強(qiáng)制等; must, can, may 表推測用法見下 must 用于肯定句中,肯定語氣最強(qiáng)。 may 用于肯定句中,肯定語氣最弱。若不定式邏輯主語同時也為句子主語,用主動表被動,反之用被動 (如:I’m leaving on business. Do you have anything to be taken there?) ,另