CAN COULD MAY MIGHT SHOULD HAD BETTER MUST WILL WOULD tidak diikuti oleh toSering terjadi kesalahan pemakaian to seperti berikut ini :
I can to swim seharusnya I can swim
You must to go to the doctor seharusnya You must go to the doctor
You had better to see a doctor seharusnya You had better see a doctor
Have, Have got dan ought selalu diikuti oleh toShe has to go to the office earlierJohn