第二讲主谓一致

　　[全析考法]

　　Ⅰ.单句语法填空

　　1．(2018·全国卷Ⅰ)While running regularly can't make you live forever, the review says it ________ (be) more effective at lengthening life than walking, cycling or swimming.

　　解析：is　根据语境可知，此处叙述的是一般的客观事实，且本句中宾语从句与主句的时态应保持一致，故使用一般现在时。it指代上一句的running regularly，是第三人称单数，故填is。

　　2．(2017·全国卷Ⅰ)Fast food ________ (be) full of fat and salt; by eating more fast food people will get more salt and fat than they need in their diet.

　　解析：is　本句中的主语是fast food，是不可数名词短语，所以谓语用第三人称单数形式，且此处讲的是现状，所以填is。

　　3．(2016·全国卷Ⅱ)Leaving the less important things until tomorrow ________ (be) often acceptable.

　　解析：is　主语是"Leaving the less important things until tomorrow"，所以谓语用单数形式；此处表示客观情况，用一般现在时。

　　Ⅱ.单句改错

　　1．(2018·全国卷Ⅲ)The classroom is a place for learning and that include learning from textbooks, and mistakes as well.________________

　　解析：include→includes　分析句子结构可知，that引导定语从句，修饰place，关系代词替代place在从句中作主语，从句谓语动词的数要与先行词保持一致，谓语动词也使用第三人称单数的形式。

　　2．(2016·浙江高考)He would ask who we was and pretend not to know us.________________

　　解析：was→were　从句中的主语是we，为复数，故be动词应该用were。

3．(2014·全国卷Ⅱ)My dream school starts at 8：30 a．m. and ends ... My dream school