→Having been informed many times，he still forgot the meeting.

[单项填空]

(8)When parents come to visit the school and talk to the teachers，we often play songs by students，and messages are also given in order to keep them of events such as outings and school plays.(2018·如东高级中学高一上期中)

A．sang；informed B．sung；informing

C．sing；informed D．sung；informed

答案　D

解析　句意为：每逢家长们来参观学校，和老师交谈时，我们经常播放由学生们自己唱的歌，而且给一些通知让家长们知道诸如郊游和校园剧之类的活动讯息。第一空是过去分词短语作后置定语；第二空是"keep＋宾语＋宾补"结构，inform和them是被动关系，故用过去分词作宾补，选D。

经典句式

1．Make as many comparisons as you can.

尽可能多地进行比较。

(1)To learn English well，you should read as much as you can.

为了学好英语，你应该尽可能地多读。

(2)Try to make as few mistakes as possible in the test.

在测验中尽可能少出错误。

[一句多译]

(3)为了让大家都听见，他尽可能说得慢一些。

①To make everyone hear，he tried to speak as slowly as possible.(简单句)

②To make everyone hear，he tried to speak as slowly as he could.(复合句)

2．The more choices you have，the better your decisions will be.

你的选择越多，你的决定就越好。

"the＋比较级．..，the＋比较级．.."句型：

(1)意为"越......就越......"，表示主、从句的两个谓语是同时进行的，一方随另一方程度的变化而变化。

(2)从结构上看，第一个"the＋比较级．.."是表示条件的状语从句；在表示将来意义的情况时，从句用一般现在时表示将来。第二个"the＋比较级．.."是主句，常用一般将来时。

(3)本结构中常用省略结构。