Need/needn't
Your hair is going grey. I think you ___ to dye it black.
Your hair is going grey. I think you need to dye it black.
It ___ snowed last night because the roof is white.
It must snowed last night because the roof is white.
People and animals ____ eat to live.
People and animals must eat to live.
We ______ do housework on weekends
we have to do housework on weekends
You _____ go to the store today. There is plenty of food in the fridge.
You needn't go to the store today. There is plenty of food in the fridge.
Your dress looks very expensive. It ____ have cost a fortune!
Your dress looks very expensive. It must have cost a fortune!
Gustav won first prize. He ____ be very happy now.
Gustav won first prize. He must be very happy now.
she ______ go swimming once a week
She has to go swimming once a week
I'd better take some extra money, just in case I ___ it.
I'd better take some extra money, just in case I need it.
You're drunk. You ____ drive your car.
You're drunk. You mustn't drive your car.
I lost my umbrella! I ____ find it.
I lost my umbrella! I must find it
yesterday I _____ call my friend
yesterday I had to call my friend
Lilly ____ worry about her exam. She'll pass it.
Lilly needn't worry about her exam. She'll pass it.
It's really important that you do it. You ____ forget about it.
It's really important that you do it. You mustn't forget about it.
Don't tell me what I can and can't do. I don't ____ any advice from you.
Don't tell me what I can and can't do. I don't need any advice from you
She (not have to) do it today, but she _______ do it later
She doesn't have to do it today, but she has to do it later
Tom ____ have hurried to the bus stop. The bus was delayed by twenty minutes.
Tom needn't have hurried to the bus stop. The bus was delayed by twenty minutes.
In Poland you ____ have a driving license to drive a car.
In Poland you must have a driving license to drive a car.
You ____ arrive on time for lessons. It's important not to be late.
You must arrive on time for lessons. It's important not to be late.
He always __________ meet his friends at the airport
he always has to meet his friends at the airport