he agree to help me,he did not ——最后一个空填yet还是though 它们俩有什么区别?

题目

he agree to help me,he did not ——最后一个空填yet还是though 它们俩有什么区别?

答案

though做副词用在句尾表示“可是；不过”,但这句子是否定句,所以用yet 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.