表示对比，可用：
nonetheless, however, yet, but, though, on the other hand, although, even though, in contrast, unlike, differing from, on the contrary, instead, whereas, nevertheless, despite, regardless of, etc.
表示比较，可用：
in a different sense, similarly, likewise, similar to, like, just as, conversely, etc.
练习7：转折语
用有效的转折语（如果需要的话）将下面的句子连接起来。（在某些情况下， 两个句子可各自成立而不须用转折语）
1. Ordinarily, I took my responsibility seriously and would write down classmates' names to preserve the silence and decorum of the school environment.
When a different teacher walked in, a teacher known to punish too hard and painfully, I decided to save my friends from his hard strokes, and I erased all the names.
2. Despite the windy conditions and below freezing temperatures, I could not tear myself away from the awe-inspiring beauty of the cosmos. Despite the frustration and difficulties inherent in scientific study, I cannot retreat from my goal of universal understanding.
3. But the sadness with which she responded, stating, "He died when he was a baby,” convinced me that it was true.It affected me as nothing ever would again.
4. Finishing the test in an unspectacular six minutes and five seconds, I stumbled off the erg more exhausted than I had ever been. That night, I went home and caught a cold. Had I followed my survivalist and rationalist instincts, I would have quit rowing then and there;
5. Immediately, I realized that I must dedicate my life to understanding the causes of the universe's beauty. The hike taught me several valuable lessons that will allow me to increase my understanding through scientific research.
6. After my grandfather’s death, I began to understand and follow his sage advice.