8.表示对比和比较
1） Jobs and work do much more than most of us realize to provide happiness and contentment.
2） Work is more than a necessity for most human beings；it is the focus of their lives，the source of their identity and creativity.
3） Rather than a punishment or a burden，work is the opportunity to realize one’s potential.
4） The more scientists find out，the more questions they are unable to answer.
9.表示条件或假设的结构
1） Without the distraction of TV，they might sit around together after dinner.
2） As long as the brain is given plenty of exercise it keeps its power.
3） Were it left to me to decide whether we should _______, I should not hesitate a moment to prefer the latter.
4） Without a degree and with no vocational experience their chances of getting good jobs are slim.
10.表示举例
1） Take______for example，
2） An illustration（例证）may make the point clear.
11.表示采取措施
1） The government should be taking effective（有效的）measures to overcome current difficulties.
2） As college students, we are obliged to make every effort to help support the Olymic Games.
3） The school authorities should invest more energy and money in improving working and living conditions for the teachers.
12.表示让步关系