In Present perfect^x, Nouns^x, Gerunds^x

1) Where are you? I've been waiting for 2 hours2) I needn't have brought that milkI = subjectneed have bought = verb; present perfect tense, modal form (need is the auxiliary), buy is the main verb, bought is the past participle.not - adverb that - demonstrative pronoun refering to...

HiYour sentence is in the present perfect. "Have you ever had ...""the feeling" is a gerund, and acts as if it were a noun (it's the direct complement of "have had"). Try and replace it with "idea", "impression" etc (I'm not saying they...

Hi,I have been to China twice. - Past Participle. Used in several tenses, like the present perfect. Sometimes used as an adjective.Studying history is a good way to waste your time. - Gerund. A verb used as a noun.Call me later, I'm busy. I am burning a couple of grammar books. - Present...