so that/in order that ...

[Anonymous]

All these sentences all correct:
1-What should I do so that the lid shouldn't fall off?
2-What should I do in order that the lid shouldn't fall off?
3-What should I do for the lid not to fall off?

[RonBee]

All these sentences all correct:
1-What should I do so that the lid shouldn't fall off?
2-What should I do in order that the lid shouldn't fall off?
3-What should I do for the lid not to fall off?

In my opinion, they are all incorrect. I would say What should I do so that the lid won't fall off? I would not use should for an inanimate object.

That's my opinion from an AE perspective. Perhaps Tdol will have a different opinion.

:)

[MikeNewYork]

All these sentences all correct:
1-What should I do so that the lid shouldn't fall off?
2-What should I do in order that the lid shouldn't fall off?
3-What should I do for the lid not to fall off?

I don't like any of those either. They attempt to mix a question about an action to a result whithout the action being mentioned.

I would say: What should I do to prevent the lid from falling off?

[Tdol]

All these sentences all correct:
1-What should I do so that the lid shouldn't fall off?
2-What should I do in order that the lid shouldn't fall off?
3-What should I do for the lid not to fall off?

In my opinion, they are all incorrect. I would say What should I do so that the lid won't fall off? I would not use should for an inanimate object.

That's my opinion from an AE perspective. Perhaps Tdol will have a different opinion.

:)

Happy to oblige- I'd say number 3 is OK and I can just about live with 1, but I would recommend it.

[RonBee]

All these sentences all correct:
1-What should I do so that the lid shouldn't fall off?
2-What should I do in order that the lid shouldn't fall off?
3-What should I do for the lid not to fall off?

In my opinion, they are all incorrect. I would say What should I do so that the lid won't fall off? I would not use should for an inanimate object.

That's my opinion from an AE perspective. Perhaps Tdol will have a different opinion.

:)

Happy to oblige- I'd say number 3 is OK and I can just about live with 1, but I would recommend it.

Should I assume you meant to put not in that last sentence?

:)