noun
1
BAD : I don't have much knowledge about it.
GOOD : I don't know much about it.
BAD : I only have a little knowledge about the United States.
GOOD : I don't know very much about the United States.
DUBIOUS : The man had a good knowledge of car engines.
GOOD : The man knew a lot about car engines.
◆◆◆
When talking informally about how much someone knows about something, use the verb know (NOT have ... knowledge ): 'I don't know anything at all about computers.' 'Talk to Pam. She knows a lot about horses.'
Have ... knowledge is mainly used in formal styles when you give precise details of what someone knows: 'Tucker has an excellent knowledge of Sri Lankan tea plantations.'
2
BAD : I've learned a lot of knowledge during the course.
GOOD : I've learned a lot during the course.
BAD : They get the knowledge of AIDS from the television.
GOOD : They learn about AIDS from the television.
◆◆◆
learn a lot/a great deal (NOT learn/get ... knowledge ): 'I've learned a lot this year.' 'She's improving but she still has a lot to learn.'
learn about sth : 'We've been learning about the American political system.'
3
DUBIOUS : I would like to get more knowledge of ancient history.
GOOD : I would like to improve my knowledge of ancient history.
◆◆◆
improve/increase/further/brush up your knowledge (of sth ): 'I'd like to improve my knowledge of Asian cultures.'
4
BAD : I am attending this course to improve my knowledges of English.
GOOD : I am attending this course to improve my knowledge of English.
◆◆◆
Knowledge never has a plural ending: 'With all your knowledge, you should be a teacher.'
5
BAD : In this job you will need a good knowledge in English.
GOOD : In this job you will need a good knowledge of English.
◆◆◆
knowledge of a subject (NOT in/on ): 'She displayed an impressive knowledge of modern French literature.'