重點講解：
1.communicate with
與…聯系，與…交往； 與…相通
例句：Group members have to communicate with each other through role-play.
小組成員必須通過角色扮演互相交流。
2.run sb over
撞倒;碾壓
例句：A truck runs her over, stops momentarily, then drives away.
一輛卡車從孩子身上碾過，停了片刻，立即開跑了。
3.lack of
缺少；不足；不夠
例句：The lack of a social safety net is often blamed for the high Chinese saving rate.
缺乏健全的社會安全保障經常被認為是中國高儲蓄率的一個原因。
4.give an alternative
做出選擇
例句：Running clubs give singles an alternative to the bar scene
跑步俱樂部是單身人士酒吧之外的選擇
5.think about
考慮；回想；思索
例句：He began to think about what he would do.
他開始思考他要做什么。