一、常见逻辑关系
1. 因果:because, so, therefore, as a result。
2. 转折:but, however, yet, although。
3. 并列:and, also, as well as。
4. 递进:besides, moreover, what's more。
5. 对比:while, on the other hand。
二、例题精讲
He is very poor, ______ he is very happy.
A. and B. but C. or D. so
解析:前后是转折关系(穷但快乐),故选but。
三、推理步骤
1. 判断上下文逻辑关系。
2. 根据逻辑选择合适词。
3. 代入验证句子是否通顺。
四、注意
关注关联词,它们是逻辑的"指示灯"。