SAT考试是检测学生基本学术能力的考试，同时也是申请美国大学本科的重要参考依据。下面来看一下SAT语法中被动语法的用法。
1、不知道谁是动作的执行者或没有必要
如：Paper is made from wood.
The house is quite old. It was built in 1950.
He was wounded in the fight.
2、需要强调动作的承受者时
如：Calwlator can't be used in the maths exam.
Books and newspapers in the reading room mustn't be taken away.
He was awarded first prize in that contest.
3、为了使语气婉转，避免提及自己或对方而使用被动语态，或由于修饰的需要，使用被动语态，使句子得以更好的安排。
如：The construction of the new lab must be completed by the end of next month.
Electricity is used to run machines.
以上就是SAT语法中被动语法的用法，SAT语法考试需要大家认真备考，大家要善于加强SAT语法真题的训练，注意多了解一下SAT语法常考题型。
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