By Prepositions, Present perfect

Hello　Optimus 'Since' is a preposition/conjunction to indicate a time point at which a time duration begins. Because in English, an event occurring at a time point in the past is commonly expressed in the past tense, <since past> is grammatically better than <since present perfect>....

1. Use of present perfect tense and simple past tense Speakers of American English generally use the present perfect tense (have/has + past participle) far less than speakers of British English. In spoken American English it is very common to use the simple past tense as an alternative in...

1.How much water does that tank..........? a) comprise b) include c) consist d) contain (I'm not sure between 'comprise' and 'contain') "comprise" takes as its object(s) persons or things that are constituent parts. "That tank comprises a lot of water" says that a lot of water is a...

Hello Blitz 1. 'Ahead of schedule' is fine - it's the usual phrase. 'Before schedule' is used too, but it's much less common. In newspapers and official reports you'd be much more likely to find 'ahead of schedule'. 'Awaken' > 'awoken'. 2. Almost right: 'I wouldn't have drunk, if you hadn't...

(1) and (2) are fine, Hanuman. They are not adverbs, they are noun objects of the preposition 'since'; the whole prepositional phrase serves as an adverbial. They represent, as I am sure you can see, the extent of time after last week and yesterday, respectively, not those expired time frames...

It is perhaps better to dispense with the idea that there is only one English that is correct. In a nutshell American and British English are but two dialects of ENGLISH. "They have enough respect for the language to use correct spelling, clear enunciation and to observe the correct use of...

Yes, those sentences are correct. You said though, that "'since' is usually used with a main clause in present perfect tense". I don't think that's true. "Since" is simply a preposition which means "the period of time STARTING at the described moment". Similarly, "until" is a preposition which...

Could you please check the following sentences and correct them for me? Proofreading 1. He would tennis when he was a teenager and still plays now. 2. It's up to me I won't be denied, it's better to lose than never have tried to fight for love. (Does the preposition for mean here because of...