1. 表示說服、勸告的意思時是不可數名詞：
They are putting pressure on people to vote yes.
I was under pressure from my parents to become a teacher.
2. 表示焦慮或工作過度時是可數與不可數名詞：
I feel I'm not able to cope well with the pressures of life.
3. 表示引起變化或改變時是可數與不可數名詞：
inflationary pressures
Analysts expect the pound to come under pressure.
4. 表示重力時是不可數名詞：
The pressure of the water turns the wheel.
5. 表示氣體或液體的壓力時是可數與不可數名詞：
The gas containers burst at high pressure.
6. 在氣象中表示地球大氣影響天氣時是可數與不可數名詞：
A ridge of high pressure is building up strongly over the Atlantic.