3. shall, should
(1) shall的用法:
①表禁止、命令、必須。
You shall do as I say. He shall be punished.
(你應該依照我所說的做。他應該被處罰。)
②用於第一人稱或第三人稱疑問句,表徵求對方的意見。
Shall I answer the telephone for you? = Do you want me to answer...?
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