Sandstorms① in Asia

　　Sandstorms have been a major② disaster for many Asian countries for centuries. Scientists have tried many ways to solve this problem and in China, a mass③ campaign④ has been started to help solve it.

　　Sandstorms are strong, dry winds that carry sand⑤ .They are often so thick that you cannot see the sun⑥， and the wind is sometimes strong enough to move sand dunes⑦. The four main places in the world where there are sandstorms⑧ are Central Asia, North America, Central Africa and Australia. Ren Jianbo, from Inner Mongolia described a terrible sandstorm he experienced⑨ as a child in the desert. "To have been caught in a sandstorm⑩ was a terrible experience，" he said."There was nothing to be done⑪. It was the most frightening and the most dangerous situation I've ever been in⑫. You just had to hope you'd survive. I thought I was going to disappear under the sand."

　　①sandstorm/'sændˌstɔːm/n.沙尘暴

　　②major/'meIdʒə/adj.主要的；多数的

　　③mass/mæs/adj.大量的；大规模的

　　④campaign/kæm'peIn/n.战役；活动

　　⑤that carry sand是定语从句，修饰winds, that在从句中作主语。

　　⑥so ...that ..."如此......以至于......"，引导结果状语从句。

　　⑦dune/djuːn/n.沙丘

　　⑧where there are sandstorms是定语从句，修饰the four main places, where在从句中作地点状语。

　　⑨he experienced是定语从句，修饰sandstorm，从句中省略了作宾语的关系代词which或that。

　　⑩动词不定式的完成式to have been caught in a sandstorm作主语。

　　⑪There was nothing to be done."一点儿办法也没有/什么也干不了"。

⑫I've ever been in是定语从句，修饰situation。引导词that或which作介词in的宾语