(
课件网) Unit 8 Safe and sound Grammar Activity 1: Lead in Look at the picture. The students were going home from school at 4:10 yesterday afternoon. Activity 2: Read and describe Read the conversation between Suzy and Amy, and then describe what happened at 4:10 yesterday afternoon. Activity 3: Work out the rule Work out the rule of the use of the past continuous tense. was/were(+not) + v-ing. We use the past continuous tense to talk about things that were happening at a particular time in the past. For example: I was reading a book at 8:00 last night. They were playing basketball when it started to rain. She wasn’t watching TV. She was doing her homework. Were you listening to music just now Activity 4: Understand when, while and as Underline the sentences with when, while and as. Activity 4: Understand when, while and as Analyses the differences in the use of when, while and as. When, while and as can be used as conjunctions of time. They all mean “during the time that. . .”. When a shorter action happened at the same time as a longer action, we use the past continuous tense for the longer action and the simple past tense for the short action. For example: I was working when the earthquake started. Activity 4: Understand when, while and as Analyses the differences in the use of when, while and as. When there are two long actions, we often use while. For example: People were running in all directions while pieces of glass and bricks were raining down. We were watching in fear while the firemen were putting out the fire. Activity 4: Understand when, while and as Analyses the differences in the use of when, while and as. If the shorter action is in the main clause, we can use when, while or as to join the clauses. For example: When/While/As Millie was watching TV, lightning hit a nearby building. Activity 4: Understand when, while and as Analyses the differences in the use of when, while and as. If the longer action is in the main clause, we often use when to join the clauses. For example: Millie was watching TV when lightning hit a nearby building. Activity 4: Understand when, while and as Analyses the differences in the use of when, while and as. Tips: When can be used for short actions or long actions; while is often used for long actions; as is used for actions that happen at the same time and often indicates two actions are connected in some way. For example: When the phone rang, he was having a shower. While I was waiting for the bus, I was reading a newspaper. As she was walking to work, she was listening to music. Activity 5: Do some exercises Complete the conversation with the correct forms of the verbs in brackets. was getting was reading was snowing were enjoying was watching were visiting Activity 5: Do some exercises Complete the article in Part B with the correct forms of the verbs in brackets. was snowing was blowing drew were clearing were getting were enjoying Activity 5: ... ...
