1. leave sb the choice of ... or ... 要么…，要么…（选择类经典句）
Our cruel and unrelenting enemy leaves us the choice of brave resistance or the most abject submission.
The age of 30s leaves you the choice of marriage or remaining a bachelor.
2. be the instrument of sth 引来某事物的人或事（使动类经典句）
If I can be the instrument of your happiness, I will sacrifice all my belongings.
3. it was the memory / memories of 追溯到…（回忆类经典句）
Perhaps it was the memories of the 1964 Tokyo Olympics and the 1988 Seoul Olympics, which were considered turning points in their nations' development.
It was the memory of 1945 Hiroshima and Nagasaki suffered from the attacks of atomic bomb, from which originated the term of "Zero Ground".
4. on the premise / ground / prerequisite / proposition / hypothesis / presuposition that 基于一个前提… （假设类经典句）
The Chinese declared to implement the policy of peaceful reunification on the premise that the then Taiwan authorities maintained that there is only one China in the world and Taiwan is only one part of China.
Advice to investors was based on the premise that interest rates would continue to fall.
5. be bound to 必定…；一定…（意愿类经典句）
The Great Western Development is bound to be a bridge between China and the rest world, promoting the common economic development and prosperity of China and the world at large.
Just wars are bound to triumph over wars of aggression.