Ishouldbefinishedpackingbythen.这里bythen结构看不懂.Ididn'tknowwhatitwouldbelike.这里itwouldbelikeShehasnoideathatthepartyisinherhonor.这里inherhonor看不懂.

Question

I should be finished packing by then.这里by then结构看不懂.
I didn't know what it would be like.这里it would be like
She has no idea that the party is in her honor.这里in her honor看不懂.

Answer 1

I should be finished packing by then.
我认为 本句be finished用法有误
应该是I should have finished packing by then.
到那时我本该已经整理好行李.（实际上没整理好）
如果指将来也应该是I shall have finished packing by then.
到那时我将已经整理好行李.
by then是介词短语 到那时 即截止到那个时间为止
经常用在过去完成时态和将来完成时态中
2I didn't know what it would be like.这里it would be like 意思是 它会像.
我不知道事情会怎么样
3She has no idea that the party is in her honor.这里in her honor是介词短语作从句中的表语.
她不知道这个派对是为她举办的.
in one's honor 意思是 专门为了某人（举办某个活动)