例如：Although he studies hard.
例如：In the past I worked at a language school in New Zealand now I am back in China.
例如：Alex finished her homework early, after that she drove to Maria’s house.
有些连接词后要对称，如： neither…nor…, either… or…, both… and…, the more… the more…, not only… but also… 特别是but also 部分经常容易有错误。还有使用and 连接两个没有直接关系的两个句子。
1. Nineteenth-century nihilists were concerned with neither the origins of philosophical thought nor how societal laws developed. (x) (结构不对称)
Nineteenth-century nihilists were concerned with neither the origins of philosophical thought nor the development of societal laws. (√)
2. The junior class built a homecoming float, and it had lights and a sound system that worked amazingly well. (x) (使用and 连接两个没有直接关系的两个句子)
The junior class built a homecoming float. It had lights and a sound system that worked amazingly well. (√)
3. Ben Franklin was a respected and talented statesman, and he was most famous for his discovery of electricity. (x) (转折关系，连接词使用不当)
Ben Franklin was a respected and talented statesman, but he was most famous for his discovery of electricity. (√)
4. George and Liam argued about football while I tried to study loudly. (x) (修饰词位置不当)
George and Liam argued loudly about football while I tried to study. √
5. Wrapped in my towel, the sun was not a problem。(x) (逻辑错误)
Wrapped in my towel, I found that the sun was not a problem. √
Credulous people believe in the existence of extra-terrestrial beings, most scientists and other informed students of nature do not。
A. Credulous people believing
B. While credulous people believe
C. Credulous people are always believing
D. Since credulous people believe
E. Credulous people tend to believe