VIETNAMESE VS ENGLISH: SHORT VOWELS AND LONG VOWELS.

Vietnamese doesn't have "Short vowels" like foot and "Long vowels" like food which is different from English. That's why many new English Vietnamese learners usually say "foot" and "food" the same.

Need /niːd/ was one of the words that I was struggled with. If I didn't really pay attention to my pronunciation, the sound I made would be knit /nɪt/

It is my own experience after nearly 10 years teaching Vietnamese and English. They are also common mistakes and opinions from my lovely students. Please source it and put the link at the end if you use any of these ideas as your reference.