知识点
本单元涉及到的知识点:
连接副词的概念:
连接副词可分为两类,一类是用于连接句子或从句,常见的有therefore, otherwise, however, moreover, still, thus, meanwhile等,另一类是用于引导从句或不定式,主要有when, why, where, how等。 例如:We all tried our best; however, we lost the game.
Tell me when we shall leave.
I do not know how to find him.
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