1.People who usually cannot afford it are the biggest tippers in front of their friends.

2.Many analysts suggest that this added pressure disproportionately touches the women, who already carry major responsibility for their own children.

3.Perhaps the most important issue that emerges from the social trends just described is the impact of family instability and single parenting on children.

4.When this happens, the government should decrease the salaries of the workers by raising taxes.

5.While this might appear to be a positive step, it is actually regressive.

答案：

1.往往是那些付不起大額小費的人在朋友面前付小費更大方。

2.許多分析家認為，對于那些已經承擔了繁重的養兒育女責任的婦女們來說，這無疑是雪上加霜。

3.也許上述社會傾向所產生的更重要的問題是家庭的不穩定性及單親家庭對兒童的影響。

4.當這種情況發生時，政府應該通過增稅來減少工人的工資。

5.盡管這樣做表面上看是一種積極的措施，可實際上卻是消極的。