? ? ? 老師叮嚀：“一切的道理比不過三個字，‘我愿意磷雇！’□锞龋”情態(tài)動詞這個部分雖然并不在高考中占據很大的分值唯笙，但是掌握情態(tài)動詞應當是一個愿意把英語學好的人所必需的。下面的內容就為大家講解了表示推測的情態(tài)動詞盒使。本文經過了全網首席高考英語名師李輝老師團隊高度認真的整理校對,無錯崩掘、可信!可供全國各省高中生打印、背誦少办！
情態(tài)動詞must, can / could, may / might均可表示推測苞慢，它們可以對過去、現(xiàn)在或將來的情況作出語氣強弱不同的推測英妓。在運用情態(tài)動詞表示推測時挽放，我們應該著重把握以下兩點：
把握推測語氣的特點，選擇恰當的情態(tài)動詞鞋拟。
表示肯定的推測時骂维，各情態(tài)動詞語氣從弱到強依次為might→may→could→can→must；表示否定的推測時贺纲，can’t / couldn’t語氣較強航闺，意為“不可能”；may not / might not語氣較弱猴誊，意為“可能不”潦刃。
【注意】must的否定形式mustn’t不表示否定推測，而是表示“不許可”或“不應該”懈叹。
情態(tài)動詞表示推測時乖杠，在用法上有一些限制：
must只用于肯定句中，意為“一定澄成，準是”胧洒。Eg：
They have been working hard all day. They mustbe tired.
can多用于否定句或疑問句中，could可用于各種句式墨状。Eg：
Can the story be true?
Simon can’t be at home, for I saw him going shop-ping just now.
You mustn’t smoke when you are walking around in the wood. You could start a fire.
may / might用于肯定句和否定句中卫漫。Eg：
It may or may not rain. I’m not sure.
Peter might come with us tonight, but he isn’t very sure yet.
確定被推測時間，正確判斷動詞時態(tài)肾砂。
對現(xiàn)在或將來的情況進行推測時列赎，用“情態(tài)動詞+do”。Eg：
Mr. Reed looks pale. He may be ill.
If you don’t have a guide, you could lose your way.
對此時此刻正在進行的情況進行推測時镐确，用“情態(tài)動詞+be+動詞-ing形式”包吝。Eg：
At this moment, our teacher must be correcting our exam papers.
He could be doing his homework in his room now.
He may be waiting for you now.
對過去的情況進行推測時饼煞，用“情態(tài)動詞+have+過去分詞”。Eg：
The road is wet. It must have rained last night.
Mars couldn’t have watched TV yesterday for he knew they would have an exam.
He didn’t come to school yesterday. He might have been ill.
【拓展】在特定的語境中诗越，“might/could+have+過去分詞”不是對一件事情是否發(fā)生進行推測砖瞧，而是表示本來可能發(fā)生但沒有發(fā)生，或者本來可能完成卻沒有完成的動作掺喻，有時具有一定的感情色彩芭届。
might have done本可以做（卻沒有），有時表示很委婉的責備感耙。Eg：
You might have phoned me, though you were busy then.
could have done本可能做（卻沒有）褂乍。Eg：
He could have caught the early bus, but he was delayed by helping a stranger.
【即學即練】用must, can/could, may/might及括號內動詞的正確形式填空。
—Where is David?
—He ________ (be) at school. Classes begin at 8.
I’m absolutely sure! They ________ (arrive) yesterday. I saw their tickets.
Are you joking? Mark ________ (go) to Paris. He doesn’t have enough money.
They ________ (live) in New York, but I’m not sure.
The concert ________ (be) wonderful last night. Fiore is a great conductor.
答案：
【即學即練】
must be
must have arrived
can’t have gone
may/might/could live
must have been
