It is NOT correct; it should be: He has neither had his breakfast nor IS HE coming out of his room (the inversion is used here for emphasis and effect).
The correct phrase would be "Neither he nor I..."
Your sister usually has breakfast at half past eight.
"Your sister usually has breakfast at half past eight."
Yes, the grammar in that sentence is correct.
Yes, it is fine.
Yes, the sentence he went crazy when his wife burnt his breakfast is a correct sentence.
The correct one is either: You will never go either. To use neither, there must be an alternate: You will never go and neither will I.
No it is a double negative
yes, it looks good to me.
Neither is correct. The correct phrase is 'goes shopping' (no for no to) He goes shopping on a Monday.
Neither friends and company or friends and events are correct sentences.
Both are used; it all depends on whether your sentence refers to the singular or the plural.Singular:Jack has become a well-known baseball player.Plural:Jack and Jill have become famous for their homemade olives.