Unless or If
If it rains, we ________________ (not/go).
If it rains, we will not go.
OR
If it rains, we won't go.
If I ___________ (see) John, I ___________ (tell) him your news.
If I see John, I will tell him your news.
Please, call me __________ you are back.
Please, call me when you are back.
My friend doesn't know how to cook but he wants to make lunch.
Use (burn)
If my friend cooks, he burns the food.
Make a first conditional sentence.
you /get back late/ I / be / angry.
If you get back late, I will be angry.
_______ they come home, I won't be really surprised.
Unless they come home, I won't be really surprised.
I ___________ (meet) my brother if I ___________ (go) to town on Monday.
I will meet my brother if I go to town on Monday.
There could be a letter from Bill today. ___________ there is, please tell me.
There could be a letter from Bill today. If there is, please tell me.
You like smoking, but it makes your fingers yellow.
If you smoke, you get yellow fingers
Make a zero conditional sentence.
people / to eat / too many sweets / they / to get / fat.
If people eat too many sweets, they get fat.
You will regret it ______ you eat all that cake.
You will regret it if you eat all that cake.
This is always true about her!
She ___________ (buy) expensive clothes if she ___________ (go) shopping.
She buys expensive clothes if she goes shopping.
I'm going to town tomorrow. ____________ you need anything, phone me.
I'm going to town tomorrow. If you need anything, phone me.
Scientifically, ice becomes water in one condition!
If you heat ice, it melts.
If you heat ice, it becomes water.
Make a first conditional sentence.
The weather / (be) / as sunny tomorrow as it was today / we / to go / surfing
If the weather is as sunny tomorrow as it was today, we will go surfing.
I think he will not come ________you invite him.
I think he will not come unless you invite him.
He ___________ (lose) weight if he ___________ (stop) eating so much.
He will lose weight if he stops eating so much.
I'm thirsty. __________ I come home, I'll have a cup of tea.
I'm thirsty. When I come home, I'll have a cup of tea.
In the winter, when the weather is very cold, the river freezes.
The river freezes if it is very cold.
The river freezes when it is winter.
Make a zero conditional sentence (with unless)
I / feel / good / the next day / I / go / to bed early
I don't feel good the next day unless I go to bed early.
He won't find the answers _________ he looks at the back of the book.
He won't find the answers unless he looks at the back of the book.
If you ____________ (mix) water and electricity, you ___________ (get) a shock.
If you mix water and electricity, you get a shock.
I'm going to spend my holidays in England. When I am there, I'll buy two pullovers.
I'm going to spend my holidays in England. When I am there, I'll buy two pullovers.
I like to ride my bicycle. I sometimes go to work by my bike on a sunny day.
I cycle to work if the weather is fine.
I ride my bike to work when the weather is sunny.
Make a first conditional sentence (with unless).
they / to go / to the party / they / to be / invited.
They won't go to the party unless they are invited.