plenty of /many

[user_gary]

Though she has plenty of/many/ knowledge about English, she afraid to speak it in public place. I think she must start speaking to improve his communication in English.

Please help me to choose the correct option. Also please correct my sentences.

[bianca]

Originally Posted by user_gary

Though she has plenty of/many/ knowledge about English, she afraid to speak it in public place. I think she must start speaking to improve his communication in English.

Please help me to choose the correct option. Also please correct my sentences.

both 'plenty of' and 'many' accompany countable nouns. Knowledge is an uncountble noun. 'many' does not go well with knowledge. 'A good deal of' knowledge - yes.

However, I would re-structure the phrase as follows:

Despite her great knowledge of English, she is afraid of speaking English in public. I think she must start to dare to do so if she is to ever improve her English communication skills.

[Tdol]

'Plenty of', like 'a lot of/lots of' can be used with uncountable nouns: he has plenty of money, etc. However, it is fairly colloquial, so you could either rewrite it as Biance has done or simply replace it with 'a lot of' or 'a good knowledge'.