requirement
1.requirement是“需要”或“需要物”, requisite是“需要物”，不作“需要”解，如A pen and a piece of paper are the requirements或A pen and a piece of paper are the requisites都可以说，但This will meet my requirements不可改作This will meet my requisites。
说“需要物”requisite比requirement多含“决不可缺”的意思。requirement通常指人为的或主观上的需要物，requisite通常指自然的或客观上的需要物，比较下面各句：
- One's requirements may be many, though one's requisites may be few.
- A strong constitution was one of the requirements for admission to the athletic club.
- Eagerness to learn and willingness to study are the prime requisites for any genuine education.
2.requirement（需要物）后面通常接of或for，如the requirements of daily life和the requirements for college entrance。requisite后面通常接of或for，偶尔接to，如the requisites of happiness，the requisites for a long journey和the requisites to success。
3.下面两句意思相同：
- The first requirement is that each of us should start work at once.
- The first requirement is that each of us start（不用starts）work at once.
