Used in the conjunctive sense, too is used postpositively, often offset with a pause (in speaking) or commas (in writing), and pronounced with phrasal stress. When used in their senses as degree adverbs, very and too never modify verbs; very much and too much do instead.
Unlike many determiners, much is frequently modified by intensifying adverbs, as in “too much”, “very much”, “so much”, “not much”, and so on. (The same is true of many.)
You use much to indicate the great intensity, extent, or degree of something such as an action, feeling, or change. Much is usually used with 'so', 'too', and 'very', and in negative clauses with this meaning.
9 1) Please tell me why is it like that. [grammatically incorrect unless the punctuation is changed. Please tell me: Why is it like that? The question: "Why is [etc.]" is a question form in English: Why is the sky blue? Why is it that children require so much attention? Why is it [or some thing] like that?
You spend about one-third of your life sleeping, but it’s still something many struggle with. Researchers and experts also struggle with it because of the mysteries surrounding how and why we sleep and what happens to us while we do.
Talk to your healthcare provider if you regularly have problems sleeping or notice signs or symptoms of common sleep disorders. Your provider can run tests, including sleep studies, to tell if you have a sleep disorder.
Fifty years of research on brain activity and physiological patterns of sleeping has revealed a great deal about what sleep is and what it is not. We all have at least a vague notion of what sleep is, but that doesn't mean that defining this mysterious part of our lives is simple.