Module 4 The natural elementsUnit 4 A visit to the Space Museum1Language focus:Using nouns/noun phrase to identify people, animals, events, objects and activites.e.g. planet, Earth.Using definite articles to refer to a cosmic object.e.g. the Sun.Using the present continuous tense to describe an action taking place at the time of speaking.e.g. Miss Guo and her students are watching a slide show in the Space Museum. Language skills:Listening Recognize differences in the use of into..