lesson 20 pioneer pilots

lesson 20 Pioneer pilots

1. driver pilot rider cyclist 骑自行车的人
2. 介词后不加that
3. cover + 距离 = travel 了一段距离
   • by sunset, he had covered thirty miles.
4. as if = as though 好像
   • It sounds as though she is been really ill.
   • Tom was behaving as though nothing had happened.
5. set out/off 动身出发
6. lasted 持续
7. greet sb with sth 以某种方式欢迎某人
   • Bill greeted tom with cries of welcome 热烈欢迎.

1-20是属于初级阶段的内容，接下来的属于中级阶段了！加油！