teaching aims: 1. to practise reading for specific information. 2. to practise using r elative clauses with when, where and why. 3. to practise using relative clauses with prepositions and relative pronouns. 4. to review and consolidate the relative pronouns. 5. to talk about explorers. teaching difficulties: to practise using relative clauses with when, where and why. teaching aids: computer and cassette.
