Review

We use Present Tense Simple

• To express general truths

• For an action happening at the moment

• For temporary actions

• Future arrangements

We use Present Tense Continuous

• For instructions

• Definite future plans

• Timetable

• Repeated actions

In order to give instructions, we use

• Past Tense Simple

• Present Tense Simple

• Present Tense Continuous

• Future Simple

To express transition from one state to another, we use

• To be going to

• Future Simple

• Past Tense Simple

• Present Tense Continuous

For an ended action, we use

• Present Tense Simple

• Present Tense Continuous

• Past Tense Simple

• Future

For two or more actions happening at the same time in the past, we use

• Present Tense Simple

• Past Tense Simple

• Past Tense Continuous

• Present Tense Simple

For a repeated action in the past that annoys the speaker, we use

• Present Tense Simple

• Past Tense Continuous

• Past Tense Simple

• Future Simple

Have to is used to express

• Prohibition

• Interdiction

• Ability

• Obligation

To show lack of necessity, we use

• Don't have to

• Could

• Might

• Should

In the sentence "You should talk to the teacher", the modal verb shows

• Ability

• Permission

• Advice

• Strong advice