The other day I was given a gift voucher, but it was only worth two thousand yen. certificate = an official document that states certain facts about someone: ‘a birth/marriage/death certificate’, ‘a certificate of health’ voucher = a kind of ticket that can be used instead of money: ‘a gift/luncheon/travel voucher’. chair 1
During the flight she sat on the chair behind me.
During the flight she sat in the seat behind me. seat = a place to sit, as found in a cinema, train, bus etc: ‘To be on the safe side, you’d better reserve a seat.’ chair = a movable seat for one person: ‘Before the children go home, they have to put all the chairs on top of the desks.’ 2
See ARMCHAIR chance The higher your qualifications, the better your chances to find a job.
The higher your qualifications, the better your chances of finding a job. chances of doing sth (= degree of probability): ‘What are the chances of finding them alive?’ change 1
We can reduce the unemployment rate with a change of the economy.
We can reduce the unemployment rate with a change in the economy. I’m disappointed by all the changes of London.
I’m disappointed by all the changes in London. Use change of when you mean that someone or something has been replaced: ‘What the country needs is a change of government.’ (= a completely new government)
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When you mean that someone or something is now different in some way, use change in: ‘The Prime Minister has made several changes in the government.’
