how long? present perfectWe use a present perfect to say how long a situation or action has continued up to now. Compare:It’s raining again.It’s...

afraid and fear In an informal style, be afraid is more common than fear. Don’t be afraid, (not Don’t fear) She’s afraid that I might find out...

Compare: a book for children about Africa and its people./a textbook on African history. a conversation about money./a lecture on economics. We...

What are modal auxiliary verbs? The verbs can, could, may, might, will, would, shall (mainly British English), should, must and ought are called...