29. 相反地…
on the contrary， …
= by contrast， …
例┱相反地少数学生似乎还在鬼混。
On the contrary， a few students， it seems， are still fooling around.
30. 另一方面…
on the other hand， …
例┱政府应严格执法，另一方面，大众也应该培养减少污染的好习惯。
The government should enforce laws strictly. On the other hand， the public also should develop the good habit of reducing pollution.
31. 然而，很可惜的是…
However， it is a pity that子句
例┱然而，很可惜的是他总是临时抱佛脚。
However， it is a pity that he should always cram at the eleventh hour.