Teaching aims: 1. Talk about the science of stars 2. Practise giving instructions
Teaching difficulties:
1. Learn to use noun clauses as the subject 2. Learn to write an essay to show your problems and the way to overcome them. 3. Vocabulary: astronomy, atmosphere, violent, explode, surface, disappointed, gradually, cheer, mass, harmful, presence, in time, prevent …from… depend on, now that, get the hang of, break out
