1) I will go to the theatre if I buy tickets.
2)If she does not come in time they will be late for the concert.
3)If I get tickets for the evening performance in advance I will ring you up.
4)He will write a letter today if has free time.
5) Will you call I me up if you come back early?
6)If you do not tell me the truth I will never speak to you.
7)If you go to bed immediately we will take you to the cinema tomorrow.
8)If they take a taxi they will not miss the train.
9)If you lend him the book he will read it quickly.
Все предложения относятся к условным предложениям Первого типа - Conditional I.
1)you mustn't eat during the lesson
2)you mustn't run on the lesson
3)you mustn't scream on the lesson
4)you mustn't hide under the table on the lesson
5)you mustn't sleep on the lesson
<span><span> In winter </span>the trees are white.
In summer it is hot and sunny.
It is rainy in autumn.
</span><span><span> In spring </span>there are many flowers in the parks.
There is much snow in winter.</span>