First Conditional

is

will be

would be

could

can

will

have

will have

had

would have

if we did not catch the bus.

if we do not catch the bus.

if we  not catch the bus.

if we would not catch the bus.

will take, be

take, will be

will take, is

you don't feed it properly.

you won't feed it properly.

you will feed it properly.

you feed it properly.

He talks to her if you don't want to do it.

He talked to her if you want to do it.

He will talk to her if you don't want to do it.

He will talk to her if you will not want to do it.

will go, visit

go, will visit

don't go, will visit

goes, will visit

do, will be

will do, will be

does, will be

will be doing, will be

don't listen, not know

won't listen, don't know

don't listen, won't know

will go, feel

won't go, feel

will go, feels

doesn't go, will feel

finishes

will finish

finished

finish