Modal verbs are verbs that indicate likelihood, ability, permission or obligation. Modal verbs change the intention or meaning of the main verb in a sentence by showing whether an action is: Learn ...

Apr. 22, 2026 A newly discovered virus hiding inside a common gut bacterium could help explain one of medicine’s long-standing mysteries: why a microbe found in both healthy people and cancer patients ...

A semicolon (;) joins two complete sentences that are closely linked in meaning. They can be used instead of a full stop between related sentences, or instead of a conjunction like 'and' or 'but'. I ...