【正文】
ials. Let students discuss the jobs of the people in the pictures with their partner. Teach the words firefighter, heat and ceiling by introducing the firefighter in the picture. Teach the words soldier, official, officer and patients by showing their pictures. Teach the word airport by explaining that the pilot works in the airport. Teach the words reason and spread by showing their Chinese meanings. 2. The teacher asks students to observe the pictures again and discuss what functions of their uniforms are. 3. The teacher lets two or three students speak out their opinions. 4. The teacher asks students to skim the passage and pare their opinions with the writer’s. 5. The teacher asks students to read the passage again and answer the questions: How many kinds of uniforms are there in the text? What are they? Teach the new word text. 6. The teacher lets two or three students tell their answers. Consolidation (10 minutes) 1. The teacher plays the recording sentence by sentence. 2. The teacher plays the recording without stopping. 3. The teacher asks students to plete the table of 1b. 4. The teacher asks two students to tell the answers. Remind them to pay attention to the usage of infinitives (to +v.). 5. The teacher lets students find out the object clauses, adverbial clauses of time and condition as well as difficult points. Solve the difficu