重点讲解：
1. of course
（表示通常、显见或众所周知的事实）当然，自然；
eg. Of course there were lots of other interesting things at the exhibition...
当然，展览上还有很多其他有趣的展品。
eg. Of course, slap-bang in the middle of town the rents are high.
当然啦，市区正中心的租金是很高的。
2. move on
继续前进；继续向前移动；
eg. The soldiers shouldered their kit and moved on.
士兵们背起行装，继续前进。
eg. By-and-by Becky suggested that they move on again.
这时贝基又开始建议继续往前走。
3. right
（地方、位置或时间）准确地，恰当地，精确地；
eg. The back of a car appeared right in front of him.
汽车尾部正对着他。
eg. I had to decide right then.
我当时就得做决定。