In Hyphens^x, Present perfect^x

Hi, I was looking at the Verb Tense Consistency section of the OWL Online Writing Lab and I have these doubts of word usages. 1. Do you have to make one word out the word or words 'time-distinction'? Why not 'time distinction'? It makes sense without a hyphen too to me? ...,...

"new-release" should have a hyphen because it is modifying the DVD. And I think that DVD is still capitalized in current usage. When you want to name a book, movie, magazine name, etc. you should use italics if you can, or at least quotation marks. The sentence "three times more people than I...

Sharad, Sharad! You are getting yourself tangled up here! Let's see how we can get you untangled. He has had to live or die situations. He had had to live or die situations. He had have to live or die situations. None of these is exactly right. You want to include the idea of...

1) The "has" is required because it shows that it's a present perfect tense, ie. Jones denied using drugs in the past and at present, is still denying it. It's a repetition and continuation of the verb (denied) from the past to the present. If you say "Jones consistently denied", it implies that...