Sep 25, 2010 · Double that occurs because the first that is the subordinating that, and the second that is a demonstrative pronoun or adjectival that.

We use can to talk about things which we think are usually, but not always, true: Reducing cholesterol through diet can be difficult. (It’s not always difficult for everyone, but in general it is difficult.)

Definition of can modal verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

High quality example sentences with “I can that” in context from reliable sources - Ludwig is the linguistic search engine that helps you to write better in English

We sometimes use be able to instead of "can" or "could" for ability. Be able to is possible in all tenses - but "can" is possible only in the present and "could" is possible only in the past for ability.

As a modal auxiliary verb, can is most often used to express a person or thing’s ability to do something. It is also used to express or ask for permission to do something, to describe the possibility that …

"Can" is one of the most commonly used modal verbs in English. It can be used to express ability or opportunity, to request or offer permission, and to show possibility or impossibility.