改错I listened carefully,but nothing heard.What will computers like in the future?We should make notes before write.He's a man of great knowledges.How do you know what should you do?

1 I listened carefully,but nothing ( was ) heard.
解析：nothing 和hear 是动宾关系，即是被动关系
2 What will computers (look/be) like in the future?
解析： look / be like看起来像....
3 We should make notes before ( writing ).
解析： 介词后面用动词ING形式
4 He's a man of great (knowledge) .
解析： knowledge 不可数
5 How do you know what (you should ）do?
解析：带疑问词的短语做宾语用陈述语气
望采纳，祝开心~！！！

改错
I listened carefully,but nothing heard.
改：I listened carefully,but nothing was heard.What will computers like in the future?改：What will computers be like in the future?
We should make notes before write.改：We should make notes before writing.
He's a man of great knowledges.改：He's a man of great knowledge.How do you know what should you do?改：How do you know what you should do?有问题请追问。

I listened carefully,but nothing【加上was】 heard.What will computers 【加上 be 】like in the future?We should make notes before 【writing】.He's a man of great 【knowledge】.How do you know what 【yo...

1.I listened carefully,but heard nothing .
2.What will computers be like in the future?
3.We should make notes before writing.
4.He's a man of great knowledge.
5.How do you know what you should do?