是两道关于if从句的英语问题,请解释说明一下为什么.
问题描述：
是两道关于if从句的英语问题,请解释说明一下为什么.
⒈if____,he promises that he will spare no effort in promoting public welfare.
A elected B elect C electing D being elected
⒉If law and order_____not preserved,people will not be able to live a secure life.
A are B were C is D was
答
1.答案是A.这是连词和分词连用或者句子的省略,因为分词elect和主语之间存在被动关系,所以用过去分词.
2.答案是C.law and order的意思是“法制”,是单数含义,所以谓语动词用单数.