注:having + v-ed做定语和状语都不会是答案
Homework _________ on time will lead to better grades.
A) done B) be done C) having done D) to have been done
The speech _________, a lively discussion started.
A) being delivered B) was delivered C) be delivered D) having been delivered
注:1. 考的是过去式独立主格结构。
2. 按时间顺序,先讲座后讨论,所以选D。
As early as 1647 Ohio made a decision that free, tax-supported schools must be established in every town _____ 50 households or more.
A) having B) to have C) to have had D) having had
The speech which he made _____ the project has bothered me greatly.
A) being concerned B) concerned C) be concerned D) concerning
注:1. which he made定语从句本身不是划线的内容的话,可以将其去掉不考虑。
2. concerning 为介词,关于。相当于 about/ over; concerning/ as to。
3. bother 打扰;brother 兄弟
fiend 魔鬼;friend 朋友
动名词:动作性的名词
1、是名词,可作主语和宾语。
2、两种形式:-ing 形式表示主动Seeing is believing;being + v-ed 表被动 being exposed to。
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