三、用所给单词的被动语态填空
Last Friday, our school held a talent show in the hall. Many wonderful
performances 1. (put) on by students. First, a piano piece 2.
(play) by Lucy from Class 2—she had practised it for weeks. Then a short play about
friendship 3. (perform) by our class. The costumes 4. (make) by
our parents, and they looked very beautiful. Some girls performed a folk dance, and
everyone cheered loudly. Finally, the results 5. (announce) by our head
teacher. Our class won third prize, and we felt so proud.

1. were put 2. was played
3. was performed 4. were made
5. were announced

【分析】
这道题考查一般过去时的被动语态的运用。解题思路：首先根据句中的时间状语Last Friday确定时态为一般过去时；然后判断每个句子主语的单复数，确定be动词用was（主语单数）还是were（主语复数）；最后将所给动词变为对应的过去分词，构成“was/were + 过去分词”的一般过去时被动语态结构。
【解析】
1. 主语Many wonderful performances是复数，时间为过去，be动词用were，put的过去分词是put，故填were put；
2. 主语a piano piece是单数，be动词用was，play的过去分词是played，故填was played；
3. 主语a short play是单数，be动词用was，perform的过去分词是performed，故填was performed；
4. 主语The costumes是复数，be动词用were，make的过去分词是made，故填were made；
5. 主语the results是复数，be动词用were，announce的过去分词是announced，故填were announced。
【答案】
1. were put 2. was played 3. was performed 4. were made 5. were announced
【知识点】
一般过去时的被动语态
【点评】
本题聚焦一般过去时被动语态的基础用法，核心是掌握be动词随主语单复数的变化及动词过去分词的形式，属于语法基础题，适合巩固被动语态知识点。
【难度系数】
0.6