A ‣ Working with your hands
builder [builds or repairs homes]
carpenter [makes things using wood]
plumber [installs and repairs water pipes, etc.]
electrician [installs and repairs electrical things, e.g. lights]
mechanic [repairs cars when there is a problem]
Language help
When something is damaged or broken, we often use repair or fix.
Dad repaired/fixed the window for me.
I need someone to fix/repair the computer.
With small pieces of equipment we can also use mend; with clothes we often use mend.
Could you fix/repair/mend my watch?
I’ve mended your trousers for you.
B ‣ Professions* 
job | what he/she does |
architect | designs buildings |
lawyer | represents people with legal problems |
engineer | plans the building of roads, bridges, machines, etc. |
accountant | controls the financial situation of people and companies |
university lecturer | teaches in a university, e.g. gives lectures |
* jobs that need a lot of training and/or education
C ‣ The medical profession 
These people treat people or animals. [give medicine or medical help]
GPs [general practitioners: doctors who don’t work in a hospital], dentists [people who look after your teeth] and vets [animal doctors] all work in a place called a surgery. In hospital there are nurses who look after people, and surgeons who operate on people. [open the body to remove or repair a part that is damaged]
D ‣ The armed forces and the emergency services 
My son joined the army when he was 18. [became a member of]
police officer (in the police force)
fireman/firefighter (in the fire brigade)