1
Discourse markers
A
Opposite relation 转折
but, however, while, unlike, though, instead of, on the contrary
B
Coordinative or progressive relation 并列或递进
and, too, also, similarly, not only…but also…, neither … nor…, moreover, worst of all
oldest and most experienced workers because they are the highest paid. While there is plenty of tired deadwood among them,there is also a lot of talent.
C Explanation 解释
mean, refer to, in other words, that is to say, attributive clause(定 语从句),appositive clause(同位 语从句)
D Cause and effect 因果
because, since, so, so…that, for, as, therefore, result in, due to
A.The author has no objection.
B.The author is against them.
C.The author has not shown it clearly.
D.The author regards them reasonable.