The doctors have not yet decided how the woman died.
1个回答
not yet
尚未,还没有
在现在完成时的句子中,already常用于肯定句,yet常用于否定句和疑问句,但yet还有其他用法.
⒈用于否定句中,意思是“还、尚、迄今、到那时”.例如：
He is not yet here. 他还未到.
At three o'clock they had not yet decided whether to play basketball or not.
三点钟时他们尚未决定是否去打篮球.
⒉用于疑问句中,意思是“已经”.例如：
Is everything ready yet 一切都准备好了吗?
⒊与比较级连用,意思是“更”.例如：
You must work yet harder. 你还需更努力地工作.
⒋与once,again,another 连用,意思是“再”.例如：
He has made yet another mistake.
他又犯了一个错误.
⒌用于肯定句中,意思是“仍然、还得”.例如：
She is yet a child. 她还是个孩子.
⒍用作并列连词时,意思是“然而、可是”.例如：
He studied hard yet he failed.
他学习努力,可是考试仍未及格.
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