只要記住這:
must have been ...那時(shí)一定是can't have been...那時(shí)不可能是
再好好理解這幾人句子,相信你就理解啦.
He can't have been ill.He must have been tired.
She can't have been forty.She must have been fifty.
He can't have been the youngest.He must have been the oldest.
He can't have been listening carefully.He must have been dreaming.
can't have been和must have been
can't have been和must have been
每一個(gè)的用法
每一個(gè)的用法
英語(yǔ)人氣：455 ℃時(shí)間：2019-08-26 07:11:36
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