(
课件网) Unit 1 Wish you were here Grammar and usage Exploring the rules Lead-in Compare the two sentences. 1) In the ten provinces and three territories which make up Canada, there is a great diversity in geography. a restrictive relative clause 2) To the east of the Pacific coast rise the grand Rocky Mountains, which are home to high peaks and deep valleys carved by ice and water. a non-restrictive relative clause A Exploring the rules Read the article on page 6 and answer the following question. What are the advantages and disadvantages of tourism Read and complete the table. A Exploring the rules Find the sentences with non-restrictive relative clauses in the article and fill in the box of part A on page 6. These industries, in turn, give jobs to the local population, whose welfare depends on tourism. These industries, in turn, give jobs to the local population, whose welfare depends on tourism. The prices of tourist essentials such as transport, accommodation and food usually increase too, which brings even more wealth to the surrounding community. More nature-centred tourist attractions, where man and nature live in harmony, can be greatly impacted or even destroyed by the flood of tourists. As resources are used more rapidly than they can be sustained, wildlife habitats are likely to suffer, which could endanger the local plants and animals. Local festivals and customs, which may have deep meaning in a particular culture, can simply become entertainment for tourists. Working out the rules Working out the rules Rule 1: We often use a non-restrictive relative clause to add _____ information to the antecedent (a noun, pronoun or noun phrase) in the main clause or the main clause. A _____ is usually used to separate the adding clause and the main clause. 非限与主句用逗号隔开，补充说明先行词或主句 1) In the ten provinces and three territories which make up Canada, there is a great diversity in geography. 2) To the east of the Pacific coast rise the grand Rocky Mountains, which are home to high peaks and deep valleys carved by ice and water. Working out the rules Rule 2: We usually introduce a non-restrictive relative clause with a relative pronoun like who, whom, which and whose or a relative adverb like when and where. The relative pronoun and adverb _____ (can /cannot) be left out in a non-restrictive relative clause. 1) These trees，which I planted three years ago，were cut by government. 2) The trees I planted three years ago were cut by government. Working out the rules Rule 3: We can use _____(which/who/where) in a non-restrictive relative clause to refer to the main clause as a whole. The prices of tourist essentials such as transport, accommodation and food usually increase too, which brings even more wealth to the surrounding community. As resources are used more rapidly than they can be sustained, wildlife habitats are likely to suffer, which could endanger the local plants and a ... ...
