ZERO CONDITIONAL

If you.................(heat) iron, it..............(expand).

If you .......... water, it ................into ice.

• freeze/turns

• boil/turn

• froze/turns

If you press this button, ...................

• it boils.

• the light turns on.

• the light turn off.

You get purple

• if you mixed red and blue.

• If you mix red and green.

• if you mix blue and red.

If water isn't hot, ...................

• it doesn't boil.

• it isn't boil.

• it boil.

If you don't water your plants, ....................

• it grows.

• they grow.

• they die.

You get burned

• if you touch a flame.

• If you touch an ice.

• if you touch a knife.

_{Change to negative form.}

_{If you call his name, he responds.}

Change to negative form.

If you drop a ball, it falls.

If you don't speak loudly,.....................

• everyone doesn't hear you.

• he listens well.

• they understand everything.