Question

• In pairs, complete the sentences below as shown in the example:

If(=when)        water is heated to 100°C(at STP) it boils. or

Water boils      if (when) it is heated to 100°C (at STP).

1. If you do not regularly oil the moving parts of a bicycle, ______________
2. _____________________ when you leave the kettle for too long.
3. When the tectonic plates of the earth's crust move, ___________________
4. _______________ if you press the FF> button on a cassette player.
5. If a plant does not get enough sunlight, _____________________

• Underline the pair of verbs used in each of the conditional sentences you have written above, and say what tense they are in.

Answer 1

1. If you do not regularly oil the moving parts of a bicycle, it breaks down.
2. The boiled water steams off when you leave the kettle for too long.
3. When the tectonic plates of the earth's crust move, the earthquake comes.
4. It starts playing if you press the FF> button on a cassette player.
5. If a plant does not get enough sunlight, it withers.

1. oil … breaks down (Present Indefinite)
2. steams off … leave (Present Indefinite)
3. move … comes (Present Indefinite)
4. starts … press (Present Indefinite)
5. get … withers (Present Indefinite)