表时间顺序的连接词：the moment, as soon as, at first, then, later, meanwhyle, at the beginning, in the end, before long, for the first（second…）time, the minute等.
表因果关系或对等关系的连接词：therefore, so, as a result, as the result of …,because of, due to …,owing to, thanks to等.
表时间顺序的连接词：the moment, as soon as, at first, then, later, meanwhyle, at the beginning, in the end, before long, for the first（second…）time, the minute等.
表转折关系的连接词：yet, and yet, but , while, on the contrary, on the other hand, however, at the same time（然而）等.