1
vote
0answers
233 views

What is the rule for duplicating the last letter when adding “-ed”? [duplicate]

I wonder if there is any rule for doubling the p at the end of a stem. For example: stop — stopped but help — helped
6
votes
1answer
1k views

Why is “transferred” written with two R's?

Why is transferred written with two R's? I am a native speaker of Dutch, and in my point of view this isn't logical; there are other words like coloured and endeavoured that only have -ed added after ...
3
votes
3answers
590 views

Why are the present and the past participles of “submit” spelled with double t?

Why are the present and the past participles of submit spelled with two t's?
17
votes
4answers
5k views

“Focussed” or “focused”? The double consonant

Initially, my question was: is "focussed" or "focused" the correct past tense of "focus", but since this applies to a lot of words, I would like to generalize and ask: is there supposed to be a rule ...