By Affirmative sentences, Modals

If we follow Swann, we can use need as a modal verb in an affirmative sentence when a 'non-affirmative' word (such as only, hardly, seldom etc.) gives the sentence a negative kind of meaning. Look at Swann's last example: the sentence becomes incorrect when only is removed.That said,...

Hi, everyone. I'm studying modals recently. I have a doubt about "ought to be doing". My grammar book says "ought to be doing" means "someone is not doing what he/she is supposed to do" in an affirmative sentence or "someone is doing what he/she isn't...

Note the definition: Operators are the modals (can, could, will, would, etc.) and forms of be -- and also forms of do or have used as auxiliaries. The negative adverb not can only be carried by an operator, i.e., can only be used when accompanied by an operator. To negate a sentence...

Dear users of EnglishForums, I believe I’ve finally understood the English uses of the modal verb “used to”. Would you be so kind to read this summary and comment it? I’ve included my Spanish translation of the English sentences in order to help Spanish students (I wish!) and also to receive your...