九、语法填空
阅读下面的短文,在空白处填入括号内单词的正确形式。
Do you love birds? There are many 1. (kind) of birds in the world. But now, many birds 2. (be) in danger.
Some people don't stop 3. (kill) birds for money. They eat birds, and use their beautiful feathers(羽毛) to make things. Some people 4. (cut) down many trees to make tables and chairs. So birds don't have many places to live. And some of them have to drink dirty water because some people throw(扔) rubbish(垃圾) into the rivers. Some people keep birds as 5. (pet). They think birds are cute. But they need to know one thing: some birds can be pets, but some birds can't. If you keep them as pets, they may die(死亡). They should 6. (live) in the forest.
So what should we do 7. (save) these birds? First, we shouldn't buy birds for food. 8. (two), we need to plant more trees and grass for them. Last, we can get more people to join 9. (we) to save the birds.
All in all, animals are our friends. We must be 10. (friend) to them.
Let's do it now.

1. kinds
2. are
3. killing
4. cut
5. pets
6. live
7. to save
8. Second
9. us
10. friendly

【分析】
本题为语法填空题，需结合语境、语法规则及固定搭配填入括号内单词的正确形式。解题思路如下：1. 分析每个空的句子成分、时态、单复数需求；2. 结合固定搭配、词性变化规则变形；3. 检查变形后是否符合语境和语法逻辑。具体到每个空：第1空由many修饰，需用名词复数；第2空主语为复数，用一般现在时be动词；第3空考查stop doing固定搭配；第4空一般现在时主语复数，动词用原形；第5空表泛指宠物，用名词复数；第6空情态动词后接动词原形；第7空用不定式作目的状语；第8空对应前文First，用序数词；第9空join后接人称代词宾格；第10空考查be friendly to固定搭配。
【解析】
1. 空格前有many，修饰可数名词复数，故将kind变为kinds；
2. 主语many birds为复数，时态为一般现在时，be动词用are；
3. 固定搭配stop doing sth意为“停止做某事”，故将kill变为killing；
4. 时态为一般现在时，主语people为复数，谓语动词用原形cut；
5. 此处表泛指“宠物”，pet为可数名词，用复数pets；
6. 情态动词should后接动词原形，故填live；
7. 此处用不定式作目的状语，表“为了拯救”，故填to save；
8. 对应前文First，此处需用序数词Second，首字母大写；
9. join为动词，后接人称代词宾格，we的宾格为us；
10. 固定搭配be friendly to意为“对……友好”，故将friend变为friendly。
【答案】
1. kinds
2. are
3. killing
4. cut
5. pets
6. live
7. to save
8. Second
9. us
10. friendly
【知识点】
固定搭配、名词单复数、情态动词用法
【点评】
本题考查初中英语基础语法，涵盖名词单复数、情态动词、人称代词、序数词及固定搭配等知识点，语境贴近生活，难度适中，能有效考查学生对基础语法的掌握程度。
【难度系数】
0.7