四、情態動詞

　　1) but there is no answer. She can’t be at home

　　(考點：情態動詞可以表示可能性，can’t 表示“一定不”)

　　2) I may have left them in the coffee shop yesterday

　　(考點：“情態動詞can/could, may/might, must + 完成式”用于表示對過去發生的動作的主觀判斷)

　　3) You must have dreamed of something terrible

　　(考點：同上)

　　4) You should have invited her to your graduation ceremony

　　(考點：“情態動詞should/ought to + have done” 用于評論過去應該做而實際并未做的動作，含有批評的意思)

　　5) I needn’t have put on my best suit to go to the party

　　(考點：“情態動詞needn’t + have + done”表示對過去發生的動作進行評論，認為“無須發生”，“不必做”)

　　五、虛擬語氣

　　1) I had had your opportunities when I was young

　　(考點：I wish后的that從句中用過去完成式表示過去沒有實現或不可能實現的愿望)

　　2) he had known this disease is curable

　　(考點：If only 引導的感嘆句表示“但愿”或“要是……就好了”，用法與 I wish…基本相同)

　　3) painted it blue, and without any decorations

　　(考點：would rather 后的that從句中用過去式表示不是事實)

　　4) measures were taken to solve the problem of traffic jams

　　(考點：It’s (about/high) time 后的that從句中用過去式，表示“該是……的時候了”)

　　5) as though he were delivering a speech at an assembly

　　(考點：as if / as though引導的從句中用過去式表示和現在事實相反或對現在情況有所懷疑)

　　6) Jack (should) be sent to hospital right now

　　(考點：表示“建議、命令、要求、想法”的動詞所接的賓語從句通常用“(that) sb. (should) do”的虛擬形式)

　　7) more mobile shops (should) be set up in the residential area

　　(考點：表示“建議、命令、要求、想法”的動詞所接的主語從句通常用“(that) sb. (should) do”的虛擬形式)

　　8) they (should) set up a special board/committee to examine this problem

　　(考點：表示“建議、命令、要求、想法”的名詞所接的表語從句通常用“(that) sb. (should) do”的虛擬形式)

　　9) the mid-term exams (should) be canceled

　　(考點：表示“建議、命令、要求、想法”的名詞所接的同位語從句通常用“(that) sb. (should) do”的虛擬形式)

　　[表示“建議、命令、要求、想法”的動詞及其名詞常見的有：advise (advice), agree (agreement), decide (decision), decree, demand, determine (determination), grant, indicate (indication), insist (insistence), order, prefer (preference), propose (proposal), request, require (requirement), resolve (resolution), stipulate (stipulation), suggest(suggestion), urge, vote;常見的這類動詞還有：allow, arrange, ask, beg, concede, demonstrate, ensure, intend, move, pledge, pray等]

　　10) we (should) be short of water in a country where it is always raining

　　(考點：在It is/was +形容詞后的that從句中常用“sb. should do”的形式表示建議驚奇等。這類形容詞常見的有：advisable, anxious, appropriate, compulsory, crucial, desirable, eager, essential, fitting, imperative, important, impossible, improper, natural, necessary, obligatory, preferable, proper, urgent, vital, willing等)

　　11) everyone (should) be prepared for emergency

　　(考點：同上)

　　12) If he had booked tickets in the way I told him

　　(考點：在非真實條件句中用過去完成式表示與過去的事實相反)

　　13) if I had not been interrupted

　　(考點：同上)

　　14) If it had rained, the ground would be wet

　　(考點：在非真實條件句中，當主句與從句表示的動作不是同時發生時，就根據情況用適當的謂語動詞形式)

　　15) If I had been living in New York

　　(考點：同上)

　　16) he would be dead now

　　(考點：同上)

　　17) we could not have rent a house at such a low price

　　(考點：but for經常作為非真實條件句中if的代用語)

　　18) otherwise, it would have taken me more time to work out this question

　　(考點：otherwise也經常作為非真實條件句中if的代用語)

　　19) I would seize the opportunity without hesitation

　　(考點：在非真實條件句中如果有were, had, should這三個詞，可以省去if，采用主謂語倒裝的形式來表示條件)