In Modal verbs^x, Tenses^x, Difference between^x

I obviously agree with Forbes: it depends on your first language. I have never had any problems with passive sentences, subjects and objects, the difference between countable and uncountable, etc. because those are all features I have in Italian too. It is not difficult at all for me to use...

Hello, there, In the following sentence: Born in New York City on Oct. 27, 1858, Theodore Roosevelt is the second of four children of Theodore and Martha Bulloch Roosevelt. At age 6, T.R., his brother Elliott and friend Edith Carow (who would one day be his second wife) watch Abraham...

Rule: Modal verbs (and "must" is one of them) cannot be followed by a past tense form. To express past tense after a modal add "have" and the past participle. This is not truly a "present perfect" but a "modal perfect". In the case of the modal perfect construction the difference between simple...

Rule: Modal verbs (and "must" is one of them) cannot be followed by a past tense form. To express past tense after a modal add "have" and the past participle. This is not truly a "present perfect" but a "modal perfect". In the case of the modal perfect construction the difference between simple...