改错（只有一处错）There will have an important meeting next Monday.

There will be an important meeting nxt Monday.不要用Have，there be举行就已经表示“有”了

There will be an important meeting next Monday.

have---be there be句型

There will have 改成There will be

There will have(be) an important meeting next Monday.
there be是固定用法,不能作其它搭配的

有两个改法:
1.There will be an important meeting next Monday.

2.They will have an important meeting next Monday