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Hello.
1) He will be return.2) He will return.
The first one is not grammatical but the second one is, I would say.
1) He will be returning soon. [but that is different, study your continuous tenses
2) He will return. [OK
I think you meant to say, "Can you teach me about continuous tenses?" Try to search for them using the search box at top right. You'll find many threads on the topics.