The following sentences from the lesson expresses the usage of Modal Verbs:
Shall: Indicates future action - suggestion/promise.
- We shall follow your advice and together protect ourselves from dangers.
Should: Note that "Being safe" is a lesson that has advice on safety rules. Hence we find maximum usage of the modal verb "should".
- When you walk on the road, which side of the road should you walk?
- We should walk on our right-hand side, against the traffic.
- We should wait until the road is clear of traffic.
- We should first look right, left and then again right before we cross the road.
- We should follow road safety rules strictly.
- We should learn to put things back in their respective places after using them.
- We should not play with knives, scissors etc.
- These mobile phones are very useful, but we should use it with care.
- You should use it in the presence of adults.
- I think we should store all medicines out of sight and reach of children.
- Medicines should be kept a locked cabinet.
- I also think pills and syrups, should be kept in their original containers.
- We should keep a count to avoid misuse.
- Gardening products should be secured and kept locked.
- A first aid kit is a must in every household which should also have an emergency instruction inside it.
Will: Voluntary actions/promises for events that will take place in the future.
- Grandpa, we will also walk, in a line one behind the other and not in groups.
- How will I know, if I'm getting a sunstroke?
Could: To ask permission in a formal and polite context, to express a probability.
- Could you please tell us the safety measures to practise at home, grandpa?
- Could I have your views on using the medicines effectively?
Can: To ask permission, to express a probability.
- Can we take him out to play in the fields, grandpa?
- We should walk on our right-hand side, against the traffic, so that we can see the vehicles coming.
- Can we put on sunscreen before going out in the sun?
- We can talk more tomorrow.
May: To express a probability.
- Oh, it may be due to the heat.
- When the body cannot cool itself fast enough, we may get a heat sunstroke.
Need/need to: Instructions/necessity - generally used with infinitive "to".
- You need to be very careful as the Sun is scorching.
- But you also need more physical activities.
- Yes, you need to put on the Sunscreen 15 to 20 minutes before going out to avoid Sunburn.
Have to: Instruction/obligations. Can be replace by "must".
- They have to take him out for playing.