It's essential/vital that everyone should do their best. (joidenkin mielipidettä ilmaisevien adjektiivien jälkeen) (AmE: It's essential that everyone DO...)

I was used to seeing my mother at home.

You may sit if you will. (haluaminen)

It was decided that Henry should be sent to Brussels. (joidenkin verbien jälkeen sivulauseessa) (AmE: It was decided that Henry BE SENT to Brussels)

I shouldn't be surprised if she were at home. (konditionaalin apuverbi, vanhahtava muoto)

George has never been able to repair/fix anything.

You might/may be right.

Thou shalt not kill.

She can speak French. / She knows French.

You don't need / have to pay attention to it. / You can ignore it.

As a child I could / was able to stand on my head.

As a kid I would go fishing with my dad on Sundays. (oli tapana, tapahtui usein)