What is the rule for adding suffixes to words when suffix begins with a vowel and root word ends an e?

The rule for adding suffixes beginning with a vowel to words ending in "e" is:

Drop the "e" before adding the suffix.

Example:

* Hope + ing = hoping

* Hate + ing = hating

* Care + er = carer

Exceptions:

* If the word ends in "ce" or "ge" and the suffix starts with "a", "o", or "u", keep the "e".

* Example:

* Notice + able = noticeable

* Change + able = changeable

* Some words retain the "e" to preserve their pronunciation or distinguish them from other words.

* Example:

* Agree + ing = agreeing (to keep the "ee" sound)

* Shoe + ing = shoeing (to distinguish it from "shoeing" - a type of horse-shoeing)

Remember: There are always exceptions to the rules in English. It's always a good idea to check a dictionary if you're unsure!