自然灾害或灾难性事件主要是指自然灾害或人类行为导致的灾难性事件。写作时，要说明灾害发生的时间、地点和危害以及对自然灾害的补救措施、经验教训和建议，注意要采用客观态度，避免主观色彩。
1．灾害的发生：
①There was/is a terrible earthquake/flood in...
②A terrible earthquake/flood hit/struck...
③...happened/took place/broke out.
2．灾害的影响：
①Thousands of people were made homeless.
②The disaster caused...deaths/injuries.
③The flood/earthquake caused great damage/losses to...
