1 Look at the examples from the text on page 44. Write (C) certain or (NC) not certain. Then
complete the rules.
a There will be some kind of base on the Moon C
b We may even create lunar cities
Ć NASA and the European Space Agency will
probably send more astronauts to the Moon
d We definitely won't live on the Moon all the
time
e We will certainly return to the Moon one day
f Such trips might not interest as many people as
those of the 1960s and 1970s

3
We use and ? to show we are sure about the
future. We use to show we are not sure about
the future. We use probably, definitely and certainly to
show how sure we are.​