If you don't have a compass, you can rarely know where south, north, east, west is when you are on a plan for example.<br/><br/>Does this makes sense?<br/><br/>Without a compass, one would say that in front is north, behind is south, to the left is west and to the right is east.<br/><br/>Is this sentence grammatical?<br/>If you don't have a compass, you can rarely know where south, north, east, west is when you are on a plan for example.<br/><br/>Thanks