（1 ）主题句法：The appeal of advertising to buying motives can have
both negative and positive effects.

The biggest safety threat facing airlines today may not be a terrorist
with a gun， but the man with the portable computer in business class.

Believe it or not ， optical illusion （错觉） can cut highway crashes.

（2 ）问题法：Do you know how many people die from traffic accidents
every 23 minutes？

Why does cream go bad faster than butter？

（3 ）对比法：Some pessimistic experts feel that the automobile is
bound to fall into disuse. They see a day in the not-too-distant future
when all autos will be abandoned and allowed to rust. Other authorities
，however， think the auto is here to stay. They hold that the car will
remain a leading means of urban travel in the foreseeable future.

（4 ）数据法：According to a recent survey， about 78.9% of the college
students wanted to further their study after their graduation.

Honesty ：根据近的一项统计调查显示，大学生向老师请假的理由当中78%
都是假的。

Living off Campus ：根据近的一项统计调查显示，35% 的学生不住宿舍，
而是在学校外面租房子住。

Youth ：根据近的一项统计调查显示，在某个大学，学生的课余时间的70%
都是在休闲娱乐。

The latest statistics show that …

（5 ）故事法：Six o ‘clock yesterday （June 20th ， Friday ） afternoon
when I was walking along the riverbank of our school， an unbelievable
scene caught my eyes.

（6 ）引语法：A proverb says，“You are only young once.”（适用于
记住的名言）

It goes without saying that we cannot be young forever. （自编名言）