The drop e rule: adding suffixes to silent e words

What does the drop e rule say?

Silent e words drop their e before a vowel suffix and keep it before a consonant suffix. That is the whole rule for most words. Bake becomes baking and baked. Hope becomes hoping. But hope becomes hopeful and care becomes careless, because ful and less start with consonants.

Why drop the e?

Because the vowel suffix can do the e's job. In make, the e signals that the a is long. In making, the i in ing sits right after the k, and a single consonant followed by a vowel already tells the reader the a is long, as in an open syllable. Keeping the e would be redundant: makeing has one vowel too many.

A consonant suffix cannot do that job. In hopeful, if the e were dropped, you would get hopful, which looks like it has a short o. So the e stays to keep the vowel long. Once students see this logic, they can work out the rule for themselves on words they have not practiced.

How is drop e related to doubling?

They are partners. Doubling protects a short vowel. Dropping e lets a long vowel stay long without extra letters. Hopping and hoping show both at once. Hop plus ing doubles the p to keep the o short. Hope plus ing drops the e, and the single p leaves the o long.

What are the exceptions?

A few groups keep the e before a vowel suffix. Words ending in ce or ge keep the e before able or ous to protect the soft sound: noticeable, changeable, courageous. Without the e, the c or g would turn hard before a or o. Words ending in ee, oe or ye also keep the e: seeing, agreeing, canoeing, dyeing. Here the e is part of a vowel team, not a silent marker.

• Keep e to protect soft c or g: noticeable, manageable, outrageous.
• Keep e when it is part of ee, oe or ye: seeing, freeing, toeing.
• Drop e in a few words before a consonant suffix: truly, argument, ninth, wholly.

The last group is small and worth memorizing. Truly and argument trip up adults all the time, so they make good examples to show older students that even confident writers have to learn a few words by heart.

How do you teach the drop e rule?

1. Review silent e words: read make, hope, ride.
2. Show making, hoping, riding. Ask where the e went.
3. Explain that the vowel suffix takes over the e's job.
4. Show hopeful and careful. Ask why the e stayed.
5. Sort words into drop e and keep e by the suffix's first letter.
6. Dictate base words with suffixes, and check students' writing.

How does the rule help reading?

Readers use it in reverse to find the base word. A student who sees making and knows the drop e rule can work back to make. One who sees hoped can tell it came from hope rather than hop, because there is only one p. That skill matters for vocabulary, since finding the base word is often the first step to working out a meaning.

It also explains a common reading error. Students who read making as mack-ing are treating it as a closed syllable. Show them that the single k after the a means the a is still long, just as in make. A quick reminder usually fixes it.

When should the drop e rule be taught?

Usually late in first grade or in second grade, after silent e and simple suffixes like s, ed and ing have been taught. It works well taught right after the doubling rule, since the contrast between hopping and hoping makes both clearer. The soft c and g exceptions belong in third grade or later.

What practice makes the rule automatic?

Short, frequent practice with base words and suffixes works best. Give students a base word and a suffix on cards, and have them write the new word, saying aloud whether they dropped the e and why. After a few days, the talk can drop away, and they just write the words. Mix in words without silent e so students must check every time.

• Word math: write bake + ing = baking on a whiteboard, then try five more.
• Sort: put suffixed words into drop e and keep e piles, then explain each pile.
• Reverse it: give making, hopeful and used, and have students write the base word.
• Dictation: say sentences with three or four suffixed words and check each one.

The reverse task is worth more than it looks. Finding the base in a suffixed word is what students do when they read, and it shows you whether they understand where the e went. A student who writes mak as the base of making has not yet connected the two.