Complete the sentences with the first conditional form of the verbs in brackets. 1 lf you buy the puzzle, l (help) you do it. 2 lf grandma (come)for a visit this weekend, we wil play cards. 3 l (buy)a new toy dinosaur if mum gives me the money for it. 4 if they (not get)here soon, we'll leave without them. 5 gerard will save us a seat at the theatre if we (ask)him to. 6 lf they don't clean this pool, i (not swim) here again. 7 i (cook)some pizza if you are hungry later. 8 if sarah (not do)her homework properly this time, dad will be really annoyed.

1. If you buy the puzzle, I will help you do it.
In this sentence, we have the first conditional form. It is used to talk about a possible future action and its result. The "if" clause introduces the condition (buying the puzzle), and the main clause states the result (I will help you do it).

2. If grandma comes for a visit this weekend, we will play cards.
Here, the first conditional form is used again. The condition is that grandma comes for a visit, and the result is that we will play cards.

3. I will buy a new toy dinosaur if mum gives me the money for it.
In this sentence, the condition is that mum gives me the money for it, and the result is that I will buy a new toy dinosaur.

4. If they don't get here soon, we'll leave without them.
Here, the negative form of the first conditional is used. The condition is that they don't get here soon, and the result is that we'll leave without them.

5. Gerard will save us a seat at the theatre if we ask him to.
In this sentence, the condition is that we ask Gerard to save us a seat, and the result is that he will do it.

6. If they don't clean this pool, I won't swim here again.
Here, the negative form of the first conditional is used again. The condition is that they don't clean the pool, and the result is that I won't swim here again.

7. I will cook some pizza if you are hungry later.
In this sentence, the condition is that you are hungry later, and the result is that I will cook some pizza.

8. If Sarah doesn't do her homework properly this time, dad will be really annoyed.
Here, the negative form of the first conditional is used. The condition is that Sarah doesn't do her homework properly, and the result is that dad will be really annoyed.

To summarize, the first conditional form is used to talk about a possible future action and its result. It consists of an "if" clause, which introduces the condition, and a main clause, which states the result. The first conditional can be used in both positive and negative forms.