2．set fire to 放火(焚烧)

　　3．catch fire 着火(动作)

　　4．put out 熄灭；扑灭(火)

　　5．cover an area of 占地......

　　6．in all 总计，总共

　　7．if necessary 如果有必要的话

　　Ⅳ.选词填空

　　选用上述短语的适当形式填空

　　1．He put out the fire with a piece of wet carpet.

　　2．The fire took place last night and many houses were burnt down.

　　3．Don't forget to take your cellphone with you in case you can call for help if necessary．

　　4．The man in black was about to set fire to the house when the police came.

　　5．The teacher said there were twelve in all who had failed in the exam.

背教材原句 记句式结构 仿写促落实 1.When the lava reached the sea，there was the possibility of a huge tidal wave which could flood half the island.

当岩浆到达大海时，有可能引起巨大的潮汐，淹没半个岛屿。 there is the possibility of ...表示"有......的可能性"。 许多人相信任何情况下陌生人相见都会有危险。

Many people believe there is the possibility of danger in any situation when strangers meet. 2.The California Earthquake of the 18th of April 1906 is the worst earthquake that has ever happened in the United States.

1906年4月18日发生的加利福尼亚大地震是美国历史上最严重的一次地震。 先行词前有形容词最高级修饰，定语从句只能用that引导。 这是我见过的最漂亮的城市。

This is the most beautiful city that I've ever seen. 3.Fires caused by the California Earthquake did the most damage.

加利福尼亚地震引起的火灾造成了最严重的损失。 过去分词短语作后置定语。 上个月建造的那座桥需要修理。

The bridge built last month needs repairing.