(
课件网) After completing the unit, you will be able to: · use words and expressions in the unit to talk about rules. · use infinitive of purpose to tell stories about following rules. · describe the importance of rules. Understanding ideas Grammar Play by the rules Unit 5 Free talk Understanding ideas Why does she get on a train？ Why must we obey the traffic rules？ Why should we wear the helmet？ Maybe she gets on a train to...... We must obey the traffic rules in order to...... We should wear the helmet so as to...... Read the sentences from the reading passage and summarise the grammar rules. 5 (a) I got on the train to go home. (b) I went to a quiet area in order to read. (c) I covered my nose so as to reduce the smell coming from Mr Smelly Food. What can you find (a) I got on the train to go home. (b) I went to a quiet area in order to read. (c) I covered my nose so as to reduce the smell coming from Mr Smelly Food. to do in order to do so as to do Now find more sentences with these structures in the reading passage. Grammar 除了作宾语等之外，动词不定式还可以在句中作目的状语，表示行为动作的目的。 The WWF is working hard to save all the animals. 世界自然基金会正在努力挽救所有的动物。 She practises every day to improve her singing skills. 她每天都在练习以提高自己的歌唱技巧。 在以上例句中，动词不定式都作目的状语，表示“做某事是为了什么”。例如在第二句中，to improve her singing skills就是目的状语，表示practises every day的目的。 She studies hard to pass the exam. 她努力学习以通过考试。 They built a fence around the garden to keep rabbits out. 他们在花园周围建了围栏防止兔子进入。 目的状语 在作目的状语时，不定式既可以放在句首，也可以放在句尾。 Dylan trained hard to improve his basketball skills. Dylan刻苦训练以提高自己的篮球技术。 也可以说: To improve his basketball skills, Dylan trained hard. To understand the local culture better, she decided to live with a host family. 为了更好地了解当地文化，她决定寄宿在当地家庭。 表示做某事是为了啥，就放在句末 特别强调这个目标，就放在句首 除了直接使用to do sth. 之外，我们还可以使用in order to do sth.和so as to do sth. 来表示行为动作的目的。 He's saving money in order to buy a new computer. 为了买一台新电脑，他正在攒钱。 Linda started work early so as to finish it by five. Linda很早就开始工作，以便在五点前完成。 Rewrite the sentences with to, in order to and so as to. 1. People wear seat belts in cars. People want to stay safe on the road. People wear seat belts in cars so as to stay safe on the road. 6 People wear seat belts in cars to stay safe on the road. People wear seat belts in cars in order to stay safe on the road. 2. Sally arrived at the train station before 6:00 am. She needed to catch the earliest train. Sally arrived at the train station before 6:00 am so as to catch the earliest train. Sally arrived at the train station before 6:00 am to catch the earliest train. Sally arrived at the train station before 6:00 am in order to catch the ea ... ...
