no it is not a correct sentence.
"He is good" is correct. 'He' is singular, 'are' is for plurals.
This sentence is completely correct.
no not usually. unless its something like "to build a house you need...."
When a book is good, I get lost. It was this sentence grammatical corrected.
"My mathematics is good" is correct out of the choices given, but a better sentence would be "I am good at mathematics".
well it is correct but the grammar is wrong instead say "are you good at swimming" they both mean the same but this sentence a correct pronunciation.No. We say we are good at something if we mean that we do it well. The sentence "You are good in swimming" might be correct, but only if "swimming" is the name of a course of study, just as we might say "You are good in French," meaning you get get high marks in French class.
The correct sentence is: He is reluctant to speak in public.
like you can say example: hey do you think i wrote a good sentence?
The correct grammar for the sentence is: "It's going to be good for me tonight." In this corrected sentence, "It's" is the contraction for "It is," and the word "good" should be used instead of "a good."
"Did you have a chance to speak with him?" is a perfectly good and correct sentence. It does not contain any grammar mistakes.
We need to have a good education to build a good career for ourselves.