Answer :
The question you have asked is related to the use of the first conditional in English grammar. The first conditional is used to talk about actions or events in the future that are likely to happen if a certain condition is met. It follows the structure: 'If + present simple, will + base verb'. Here's how this applies to the sentences given:
'If I go out tonight, I will go to the cinema.'
- This sentence means that the speaker will go to the cinema on the condition that they decide to go out.
'If you get back late, I will be angry.'
- In this sentence, getting back late is the condition that will result in the speaker being angry.
'If we don't see each other tomorrow, we will see each other next week.'
- Here, the condition is not seeing each other tomorrow, which will lead to the action of seeing each other next week instead.
'If he comes, I will be surprised.'
- The condition is 'he comes', and the result will be the speaker's surprise.
'If we wait here, we will be late.'
- Waiting here serves as the condition that could cause them to be late.
'If we go on holiday this summer, we will go to Spain.'
- This implies that going on holiday this summer is the condition for going to Spain.
'If the weather doesn't improve, we won't have a picnic.'
- In this case, the picnic is dependent on the improvement of the weather.
'If I don't go to bed early, I will be tired tomorrow.'
- Not going to bed early is the condition that could result in being tired the next day.
'If we eat all this cake, we will feel sick.'
- Eating all the cake is the condition that might lead to feeling sick.
'If you don't want to go out, I will cook dinner at home.'
- The condition is not wanting to go out, and the result is cooking dinner at home.
Understanding the first conditional helps you express future plans or predictions that are dependent on certain conditions being met.