| ―I thought you wouldn’t mind. ―Well, as a matter of fact I don’t, but you _______ me first. |
| ―I called you yesterday. A woman answered, but I didn’t recognize her voice.―Oh, it _______ my aunt Jean. |
| That car nearly hit me; I _______. |
| He _______ the test again, in which case, his mother will be very disappointed. |
| ―Why didn’t she come to the meeting yesterday?―I’m not so sure. She _______ ill. |
| Why did you just sit and watch? You _______ me. |
| We _______ have proved great adventurers, but we have done the greatest march ever made in the past ten years. |
| ― I think I’ll give Bob a ring.― You _______. You haven’t been in touch with him for ages. |
| ― What’s the name?― Khulaifi. _______ I spell that for you? |
| If it were not for the fact that she _______ sing, I would invite her to the party. |
| ― Must he come to sign this paper himself?― Yes, he _______. |
| ―May I smoke here?―If you _______, choose a seat in the smoking section. |
| ― Could I have a word with you, mum?― Oh dear, if you _______. |
| We hope that as many people as possible _______ join us for the picnic tomorrow. |
| The weather turned out to be fine yesterday. I _______ the trouble to carry my umbrella with me. |
| The teacher _______ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose. |
| My MP4 player isn’t in my bag. Where _______ I have put it? |
| The biggest problem for most plants, which ___ just get up and run away when threatened, is that animals like to eat them. |
| ― She looks very happy. She _______ have passed the exam.― I guess so. It’s not difficult after all. |
| I told your friend how to get to the hotel, but perhaps I _______ have driven her there. |
【答案解析】
1. should 后接動詞完成式表示“本來應該做某事，結果未做”，此處含有責備之意。but you should have asked me first的意思是“你本來應該先問我一聲的”。
2. 對過去情況的肯定推測，宜用“情態動詞 + 動詞完成式”，再根據句意，可確定答案。注：can 表示推測通常不用于肯定陳述句。
3. 表示過去可能發生而實際上未發生的事，用“might +動詞完成式”，不用“may+動詞完成式”。若只是推測過去可能已經發生的事，則可用“may [might] + 動詞完成式”，如：He may [might] have gone. 他可能已經走了。
4. 根據下文的 will be 可知，“他考試不及格”是將來的事，據此可排除B和D。
5. 從時間上看，由于是昨天沒來開會，所以推測“他生病”也應是昨天，故排除A和C。從語境上看，既然上文說I’m not so sure，那么說明說話者對自己的推測沒有很大把握。
6. 根據上文的過去時態可知，此句談的是過去的事，故排除A和C。You could have helped me的意思是“你本來可以幫幫我的（但你卻沒有幫）”。
7. 比較：needn’t have done意為“本來不必做某事”，may not have done意為“(過去)可能沒有做某事”，shouldn’t have done意為“本來不應該做某事”(must表推測時不用于否定式)。
8. 將四個選項分別置于句中，比較句意的通順性，便可知填什么最佳。
9. Shall I…? 意為“要我……嗎？”，又如：Shall I help you? 要不要我幫你的忙? Do you want a bath at once, or shall I have mine first? 你馬上洗澡還是我先洗?
10. 因為她“不會”唱歌，所以我才沒有邀請她去參加晚會。
11. 以Must開頭的疑問句，在作肯定回答時通常要用must或have to，如：Must we bring our passports with us? 我們必須帶護照嗎?—Yes, you must. 是的，你們必須要帶。
12. must在此表示堅持或固執，又如：After I gave her my advice，she must go and do the opposite. 在我給她出主意之后她偏反著干。
13. must在此表示堅持或固執，if you must的意思是“如果你一定要說的話，你就說吧”。
14. can在此表示希望或建議，可譯為“能夠”“可以”，如：We can eat out if you like. 如你愿意，我們可以出去吃。
15. needn’t have done的意思是“本來不必做某事”(但實際上做了)。又如：You needn’t have been staying up so late. 你本來無需待到這么晚還不睡的。You needn’t have mentioned it. 你沒有必要提及此事的。
16. “must+have+過去分詞”表示對過去情況的肯定推測。句意為：我想，老師一定認為約翰遜是值得教的，要不然她就不會在他身上浪費時間了。
17. can在此表推測，“can+have+過去分詞”表示對過去情況的推測，主要用于否定式或疑問句中。句意為：我的MP4不在包里，我會把它放到哪里去了呢？
18. can在此表示能力，can’t表示“不能”。此題所考查的知識點比較簡單，但由于句子結構比較復雜，所以許多學生不是由于沒有弄清知識點而誤選，而是由于不理解句意而誤選。全句意為：對于大多數植物來說，它們所面臨的最大問題是(有些)動物喜歡以它們為食物，而當它們受到威脅時卻不能起身逃跑。
19. “must+have+過去分詞”表示對過去情況的肯定推測。由于“她看上去氣色不錯”，而且“考試也不難”，所以她一定是通過了考試。
20. 比較：“could+have+過去分詞”的意思是“本來可以”“本來應該”“本來能夠”；“must+have+過去分詞”的意思是“一定已經”；“might+have+過去分詞”的意思是“本來可以”“本來可能”；“should+have+過去分詞”的意思是“本來應該”。
