13. If A ⇒ B
1st
cond. present tense will (future)
If it / rain we / stay / home
If you / want I / invite / you / my party
If
Gianni / come / university /
tomorrow
we / have / lunch / together
If Anna / get / scholarship she / go / to study in USA.
If it / not rain / weekend we / go / the beach
If we / arrive / late we / meet / the bar
14. If it rains, we’ll stay at home.
=
We’ll stay at home if it rains.
15. If it rains, we’ll stay at home.
We’ll stay at home if it rains.
comma
no
comma