20. Mr Smith _________ a book about China last year but I don’t know whether he has finished it.

A. has written          B. wrote                   C. had written          D. was writing

【分析】此題應選D，這是由 but I don’t know whether he has finished it 這一句話的語境決定的，全句意為“史密斯先生去年在寫一本書，但我不知道他現在是否寫完了”。有的同學可能由于受 last year的影響而誤選B。但若選B，則句子前半部分的意思則為“史密斯先生去年寫了一本書”，既然是“寫了”，那么這與下文的“但我不知道他現在是否寫完了”相矛盾。

21. Robert is said _________ abroad, but I don’t know what country he studied in.

A. to have studied    B. to study               C. to be studying      D. to have been studying

【分析】此題4個選項都容易誤選，其實最佳答案應是A，主要是因為下文but I don’t know what country he studied in 這一語境，注意此句中的過去時謂語動詞 studied，這說明“他”在國外學習是過去的事，進而可以推知填空處應用不定式的完成式。請看類例：

(1) He was _________ the new ambassador, but he fell ill.

A. to be                    B. being                    C. to have been         D. having been

最佳答案選C，注意下文的 but he fell ill，指的是過去。

(2) I wish I’d been there — I would like _________ her face when his husband came in.

A. to see                   B. to have seen          C. seeing                  D. having seen

最佳答案選B，注意上文的 I wish I’d been there，涉及的是過去的情況。

22. “Why haven’t you bought any butter?” “I _________ to but I forgot about it.”

A. liked                   B. wished                 C. meant                 D. expected

【分析】此題似乎4個選項都對，但根據上下文的語境，只有C為最佳，I meant to 為 I meant to buy some butter 之省略。甲問乙為什么沒買黃油，乙回答說“本來打算買的，但忘記了”。在所提供的4個選項中，各個動詞均可后接不定式，但要表示“本來打算做某事而沒有做”這一意思時，以用 meant to do sth 為最佳。

23. I read about it in some book or other, does it matter _________ it was?

A. where                  B. what                    C. how                     D. which

【分析】此題答案選D，主要與上文的some book or other (某一本書)這一語境有關，全句句意為：“我在某一本書上讀到過它，是哪一本書這很重要嗎？”請看類例：

(1) “Who told you?” “Oh, somebody or other, I’ve forgotten _________.”

A. what                    B. when                    C. which                  D. who

答案選D。句意為：“誰告訴你的？”“噢，有個人，我忘記是哪一個了。”

(2) Some of the students were late for the meeting, but I can’t remember _________.

A. what                    B. when                    C. which                  D. whom

最佳答案為C。句意為“有些學生開會遲到了，但我不記得是哪些學生了”。

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