第五十节学习内容补充

用于总结的连接词：

on the whole,in conclusion,in a word.

to sum up, in brief, in summary.

to conclude, to summarize, in short.

嘻嘻:     Don't sell yourself short.  不要妄自菲薄.

Sorry for the short notice.不好意思这么突然地通知你.

看到这两句，想分享给大家，希望对大家有所帮助。