①The new law forbids smoking in offices. 新法律禁止在办公室抽烟。

②I forbid you to tell anyone. 我不许你告诉任何人。

③Lack of time forbids us from discussing the problem now.

由于时间不够，现在我们不能讨论这个问题.

5.（教材原句）Boys and girls tend to be different in this regard. 男孩和女孩在这方面往往有所不同。

归纳拓展

①We tend to take technology for granted nowadays. 我们往往认为技术是理所当然的。

②Prices are tending upward. 物价在上涨。

6. limit n. 限制；极限；界限 vt.限制

（教材原句）Many boys become risktakers-they want to find their own limits and the limits of the world around them,but may not have the wisdom to make good choices in their behaviour.

许多男孩会成为冒险者，他们想找到自身的极限以及他们周围世界的极限，但是在行为上他们或许并没有做出良好选择的智慧。

归纳拓展

①He tried my patience to its limits. 他把我逼得忍无可忍了。

②The speed limit on this road is 70 mph. 这条路的车速限制是每小时70英里。

③The doctor limits the amount of food that I eat. 医生限制我的饭量。

7. balance vt.& vi.& n. 平衡；抵消

（教材原句）Since teenagers have difficulty balancing these needs,they often question who they are and how they fit in society.因为青少年很难平衡他们的这些需求，所以他们常对他们是什么样的人和如何适应社会产生质疑。

例句：①Try to achieve a better balance between work and play. 争取把工作和娱乐更好地结合起来。

②Riders need a good sense of balance. 骑车的人需要有良好的平衡感。

③His lack of experience was balanced by his willingness to learn. 他悉心好学弥补了经验不足。

④How long can you balance on one foot? 你能单脚站立多久？

（ ）There's a______in our office that when it's somebody's birthday,they bring in a cake for us all to share. （2011·高考山东卷）

A.Tradition B.balance C.Concern D.relationship

8. last vi. 持久