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1)主语从句 It is common knowledge that honesty is the best policy. It is well-known that It is self-evident/ conceivable / obvious / apparent that It goes without saying that It is universally acknowledged that It is / that 2)宾语从句 We cannot understand why he was so cruel to his roommates. The problem is not who will go, but who will stay. 3)定语从句 As is shown/ demonstrated/ illustrated/ depicted/ describedin the cartoon/ picture/ graph/ table, There are many reasons why I want to study in your university. It is estimated that tens of billions of pounds is spent on cigarettes every year in our country, which is a huge waste. 4)状语从句 When the man is enjoying the cigarette, the smoke becomes a monster which will devour him. Whatever the reason, there are still some problems with student use of computers. 5)分词短语做定语或状语 Prof. Kang came to our university, giving us a lecture on how to acquire English better. 6)倒装句 Only through these measures can we hope to solve the problem. Scattered around the globe are more than 100 small regions of isolated volcanic activity known to geologists as hot spots. | 
