Exercises to learn English

Should

Should is a modal auxiliary verb and is followed by infinitive without "to". It is often used to give advice:

You are talking to the man in the picture and you say:

you should stop behaving like a child.

Should followed by continuous infinitive (should + be + V-ing) is used to express the idea that somebody is not doing what is right or they are doing something silly, wrong, etc.:

Mother: Switch off the TV. You should be studying.

Should followed by perfect infinitive (should + have + past participle) is used to express regret. The subject did something wrong in the past or he did not do what was right at the time:

Mother: You should not have hit your brother. (You did something wrong: you hit your brother.)