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）
The eyes of all our countrymen are now upon us, and we shall have the blessings and praises, if happily we are the instruments of saving them from the tyranny meditated against them.
The organization he had built up eventually became the instrument of his downfall.
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.