基本信息
重点句型
1. upon reaching the top of the mountain, a feeling of happiness and a sense of achievement will be experienced.
2. in reality, my grandfather can no longer walk, …
3. in my opinion, it is about time (that) we had new computers.
该句型中，从句的谓语动词常用过去式，也可以是动词原形，有时可省略。
