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直述語氣 — 陳述事實、表達否定或提出詢問
It is very cold today.
今天很冷。
I cannot imagine what will happen next.
我無法想像接下來會發生什麼。
How often do you play tennis?
你多久打一次網球?
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祈使語氣 — 表達請求、命令、忠告或禁止 (主詞You通常被省略)
Please take a number.
請拿個號碼。
Alex, do your homework now!
亞歷克斯,現在去做你的功課!
Be careful!
小心!
Don't talk so loud.
不要那麼大聲說話。
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假設語氣 — 表示命令、建議、祈望、或與現在事實相反的假設 (注意動詞使用的時態)
She demanded that he tell her the whole truth.
她要求他告訴她全部的真相。
I suggest that she be here as soon as
possible.
我建議她盡快到這裡來。
I wish that he were here now.
我希望他現在就在這裡。
If I were taller, I would have been a professional basketball player.
如果我有長得更高的話,我就會已經成為一個職業籃球運動員。