Unless ____to speak ,you should remain silent at the conference.
Unless ____to speak ,you should remain silent at the conference.
A invited B inviting C been invited D having invited
為什么C不可以.
A invited B inviting C been invited D having invited
為什么C不可以.
英語人氣：462 ℃時間：2020-06-15 11:41:35
優(yōu)質解答
這是個Unless引導的條件狀語從句的省略句,完整的句子應該是：Unless you are invited to speak,you should remain silent at the conference.在條件狀語從句中,主句用將來時,從句用一般現在時.這個句子中Unless引導...
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