请教以下4句英文造句哪里做的不对?

1.Please tell me the exact time of the meeting that will start so that I can inform all the guests that the meeting will be delayed to what time.
2.You should make yourself at home,and you can do something or invite someone to stay with you in the room,and you needn’t tell anyone if you want to go anywhere,just to make sure that you have locked the door that will be enough.
3.Frank looks more intelligent than John,but actually,John deals with difficulties more intelligently than frank.
4.I must ask you to go out now.
I want you to go out.
I’d like you to go out to look after the children in the garden.

1.Please tell me the exact time when the meeting will start, so that I can inform all the guests that the meeting be delayed to what time.
2.You should make yourself at home, you can do anything, ...