註must 表示對現在情況的推測後接動詞原形時,該動詞通常為狀態動詞(如 be, have, know 等),若為動作動詞,通常要轉換其他說法。如要表示“他壹定會贏”,通常不說He must win,可說He is sure to win。(He must win的意思是“他必須要贏”)他必須要贏(3) 其後可接進行式或完成進行式,用以談論壹個正在進行的動作。如:He must be writing a letter to his girl friend. 他壹定在給他女朋友寫信。Someone must have been smoking here.壹定有人壹直在這裏抽煙。(4) 後接完成式,用來談論已發生的情況。如:He must have arrived already.他壹定已經到了。I didn’t hear the phone. I must have been asleep. 我沒有聽到電話鈴,我壹定是睡著了。
3. 表示“應當”相當於should, ought to的意思。如:You must say hello to her.妳應當跟她打個招呼。We must go and have a weekend there.我們應當到那裏度周末。4. 表示“偏偏”有時表示不巧,有時表示固執,通常都是指令人不快的事。如:Must you make so much noise? 妳就非得弄出這麽大的聲音嗎?Why must you always interrupt me? Why must you always interrupt me? 妳為什麽硬是老要打斷我?
We were ready to leave, but the baby must catch cold. 我們剛準備好要走, 可孩子偏偏得了感冒。
Just when I was busy, the neighbor must come and chatter. 正當我忙碌的時候,鄰居偏偏過來聊天。