It will be better if we met / meet at 4 pm.
It will be better if we meet at 4 pm.
He’ll be happy if you could / can help him work out the solution to this maths equation.
He’ll be happy if you can help him work out the solution to this maths equation.
You’ll get wet if you don’t use an umbrella. > Unless
You’ll get wet unless you use an umbrella.
If you need / do need more information about how to do the experiment, ask the teacher.
If you need more information about how to do the experiment, ask the teacher.
a stone / goes / in / does / water / if / float / it / ?
Does a stone float if it goes in water? If a stone goes in water, does it float?
well / we / when / sleep / feel / don’t / we / tired
We feel tired when we don’t sleep well. When we don’t sleep well, we feel tired.
We’ll miss the bus if we don’t hurry. > Unless
We’ll miss the bus unless we hurry.
You won’t be allowed to meet your friends if you don’t finish your homework. > Unless
You won’t be allowed to meet your friends unless you finish your homework.
hungry / if / some / you’re / food / eat
If you’re hungry, eat some food. Eat some food if you’re hungry.
The solution won’t mix if you don’t shake it. > Unless
The solution won’t mix unless you shake it.
I think if you will rub / rub those sticks together, you’ll make a fire.
I think if you rub those sticks together, you’ll make a fire.
The internet won’t work if you don’t turn on the modem. > Unless
The internet won’t work unless you turn on the modem.
I hope my brother will help me with my science project if / when I have any problems.
I hope my brother will help me with my science project if I have any problems.
floats / water / if / put / you / in / oil / it
Oil floats if you put it in water. If you put oil in water, it floats.
it / dark / goes down / when / the sun / gets
When the sun goes down, it gets dark. It gets dark when the sun goes down.