By Present perfect, Colons

Please answer the following questions. 1. Is this the correct use of a semicolon? I don't think the clause after the semicolon can stand on its own. When did you last hear about it? Some said never; others said not since they left home. 2. Why is it have to be past perfect? Is that because...

Hi, You wrote: Generally, when using the present perfect tense, we are not specific RE: when the action occured. (1) I think the correct sentence is: Generally, when using the present perfect tense, we are not specific RE when the action occured. Am I right? "Re" is a preposition, so why...

Hi, 1. You will not have heard of me before but I used to live next door to your sister.2. That is absurd; they really could not have taken your motorbike by mistake, surely?3. You are a bit overweight; you should have been doing more regular exercise.4. You were to have been...

Hello Sextus Here you go: 1) “The past few years have witnessed the publication of a considerable number of books and papers on the influence that ancient scepticism (broadly defined) . I don’t understand whether by adding “an” before “assimilation”, the sentence is correct, or whether I...