tap → tape · tub → tube

Magic E in action — short /æ/ becomes diphthong /eɪ/, and short /ʌ/ becomes long /uː/.

The Magic E Rule

Adding a silent ‘e’ to the end of a word makes the vowel say its name — and the E itself is never pronounced.

tap → tape: /æ/ → /eɪ/tub → tube: /ʌ/ → /uː/

Illustrated examples

tap (a faucet or knock) → tape (sticky strip)

/tæp/

short /æ/

+ e

/teɪp/

diphthong /eɪ/

tub (a bathtub) → tube (a hollow cylinder)

/tʌb/

short /ʌ/

+ e

/tjuːb/

long /uː/

What’s happening to the vowel

tap → tape

The vowel letter is ‘a’. Without the E it gives short /æ/ — flat, jaw wide, like “cat”. Add the E and the vowel says its name: /eɪ/ — a gliding diphthong, like “name”. Same pattern: cap → cape, man → mane, pan → pane.

tub → tube

The vowel letter is ‘u’. Without the E it gives short /ʌ/ — relaxed and central, like “cup”. Add the E and the vowel says its name: /uː/ — lips push forward in a tight circle, like “moon”. Same pattern: cub → cube, cut → cute, hug → huge.

Example sentences

tap:“Turn off the tapwhen you brush your teeth.”

tape:“Use sticky tapeto seal the parcel before posting it.”

tub:“She filled the tubwith hot water and bath salts.”

tube:“Squeeze the tubeof toothpaste from the bottom.”

Pattern summary

A-E pattern

/æ/ → /eɪ/

tap → tape · cap → cape · man → mane · pan → pane

U-E pattern

/ʌ/ → /uː/

tub → tube · cub → cube · cut → cute · hug → huge

Hear it in a sentence

He left the kitchen tap running and flooded the sink.

She used masking tape to mark the edges before painting the walls.

The children splashed in the bath tub for nearly an hour.

She squeezed the last of the toothpaste out of the tube.

How teachers explain this

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