if you don't speak louder ,pepople can't hear you.改为同义句

1.答案：
If you don't speak louder,pepople can't hear you.
= Speak louder,(or) you can't make yourself (heard).
2.翻译：
1）If you don't speak louder,pepople can't hear you.
如果你不更大声点说话,人们就不能听见你.
2）Speak louder,or you can't make yourself heard.
大点声说话,否则你就不能使自己被别人听见.
3.
1）or表示“否则”,引导一个并列句.
2）固定结构：使役动词make + 宾语yourself + 宾语补足语heard.
因为宾语yourself和宾补动词hear之间是被动关系,所以用其过去分词形式heard.