zero conditional

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello,

could you please explain following:

We use the zero conditional to talk about things in general. Could you explain the difference between a sentence with “when” and “if”? In what situation are they used?

When/If you fly budget airline, you have to pay for your drinks and snacks.
If/When you need more space, a small car is big enough for one person.

another question:

When we talk about things in general, we use the Present Simple.
When we are talking about things in general, we use the Present Simple.

Giving a definition, speaking in general, when do we use the Present continuous in the when-clause? Is there a difference? And again can we replace when with if in these cases?

Thank you

2

1-- One distinction of the zero conditional is that when = if. The conjunctions are interchangeable.
2-- I see no real difference between present simple & present continuous there, and the conjunctions are again interchangeable.

3

Hi

We use ‘if’ for possible and use ‘when’ for say to do something after that.
Maybe I wrote above sentence grammatically wrong!!!

If you need more space, a small car is big enough for one person. (Maybe you don’t need any space)

4

We use ‘if’ for possible and use ‘when’ for say to do something after that.– Not in the case of the zero conditional, which is what we are discussing here, Mdgh.

5

Thank you very much for your attention.