Tài liệu dentist ppt

Past Tense: In English, the most common way of making a verb past tense is to add the ‘ed’

ending. However, the ‘ed’ ending is not pronounced the same in all words. The ‘ed’ can have three

different sounds. It can sound like a ‘d’ (which is the most common), it can sound like a ‘t’ or it can

sound like ‘id.’

Make each of the words in the list past tense and then say it aloud. Write the correct ‘ed’ sound in

the blank next to each word (better use a pencil in case you make a mistake). Now listen to the

pronunciation of the words and check your answers (you may have to listen more than once).

Do you see any patterns? Is there anything that will help you predict which words have which

sounds? Which sound was the most common (was it ‘d’)?

Ask _____

Brush _____

Call _____

Change _____

Check _____

Clench _____

Close _____

Concern _____

Decay _____

Decide _____

Diagnose _____

Direct _____

Enhance _____

Enjoy _____

Exam _____

Fix _____

Floss _____

Lift _____

Look _____

Observe _____

Open _____

Polish _____

Recede _____

Refer _____

Repair _____

Review _____

Rinse _____

Scare _____

Seat _____

Show _____

Skill _____

Smile _____

Soak _____

Sterilize _____

Swish _____

Treat _____

Turn _____

Use _____

Want _____

Wash _____

Work _____