Change to past tense
Make a sentence from present to past.
Make a sentence from past to present
Professional medical verbs
rules for past tense
100

I live in New York City.

I lived in New York City.

100

read

Yesterday I read the newspaper.

100

said

I say to vote yes.

100

ache

My tooth ached for two days now.

100

If the final sound of the base verb is unvoiced, what is the pronunciation of the final -ed?  

also unvoiced /t/ sound.

Some voiceless consonants include f, k, p, sh, ch, s, x... as in watch, work, wash, hope, relax, like

200

I want milk for breakfast.

I wanted milk for breakfast.

200

share

Yesterday I shared my cookies with the class.

200

fixed

I'll fix the toy

200

aggravate

Did you aggravate you knee when you walk up the stairs?

200

If the final sound of the base verb is voiced, what is the pronunciation of the final -ed?  

it is also voiced /d/. Some voiced consonants include: b, g, j, l, m, n, r, v, z

call, amuse, play, plan, name, love

300

I watch the kids play at the park.

I watched the kids play at the park.

300

dance

Yesterday she danced to the music.

300

brushed

Did you brush your teeth?

300

deteriorate

If you don't floss your gum health will deteriorate.

 

300

If the final sound of the base verb ends in a vowel, what does the pronunciation of the final -ed?

All vowels are voiced. a, e, i, o, u 

videoed, booed, played, carried, applied,

400

I feel that today is going to be a great day.

I felt that today was going to be a great day.

400

start

I started a puzzle yesterday

400

allowed

I allow the cat to live inside.

400

examine

I will have to examine your X-rays for any cavities.

400

When do you add an extra syllable -ed? 

To words that end in t, d, te, de 

accepted, appreciated, connected, excited, interrupted, invented, started

500

I'll tell the nurse I need a bandaid.

I told the nurse I needed a bandaid.

500

tear

Yesterday my shirt was torn

500

illustrated

Let me illustrate the plan for you.

500

inflame

It looks like your gums are inflamed.

500

What rules do irregular verbs follow?

No rules for irregular verbs. 

They form the simple past tense and the past participle in any number of unpredictable ways. 

Some irregular verbs, like let, shut, and spread, never change, whether present or past. 

Others, like feel and teach, become modified versions of themselves (felt, taught) to form both the past tense and the past participle. 

Still others, like break and sing, change to form the past tense (broke, sang) and change again to form the past participle (broken, sung). 

And then there are a few really weird ones, like go: its past participle (gone) is recognizable enough, but its simple past tense is a strange new word (went).

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