Question

Thank you for giving me so much help. I _______in the experiment without your support.

A．have failed

B．will fail

C．would have failed

D．must have failed

Answer 1

C

試題分析：考查虛擬語氣。本題中的介詞without要不是…；如果沒有…；這是一個(gè)含蓄的條件句，句意：多謝你給我的幫助，如果沒有你的支持，我就會(huì)在實(shí)驗(yàn)中失敗。根據(jù)句意說明是與過去事實(shí)相反，故使用“情態(tài)動(dòng)詞+have done”。D項(xiàng)的must have done一定做了某事；表示對(duì)過去事情的推測，而不是虛擬。故C正確。
點(diǎn)評(píng)：虛擬語氣是高考每年的必考點(diǎn)，用法較多，其中的without引導(dǎo)的含蓄條件句。平時(shí)學(xué)習(xí)應(yīng)積累鞏固。
1. 與現(xiàn)在事實(shí)相反：Without air, man couldn't exist on the earth.沒有空氣的話，人類將不能在地球上生存。
謂語動(dòng)詞：would/could/might (not) do sth.
2. 與過去事實(shí)相反：Without your help, I would have failed the exam last week.沒有你幫助的話，我上周考試可能就通不過了。
謂語動(dòng)詞：would/could/might (not) have done sth.
3. 與將來事實(shí)相反：Without your ticket, I wouldn't be able to go to the concert tomorrow.要是沒有你的票的話，我明天就不能去聽音樂會(huì)了。
謂語動(dòng)詞：would/could/might (not) do sth.