Simple Tenses. Ex. 3. Enter the Past Participle of the following verbs:

(Passive Voice)

(REVISION)

Ex. 3. Enter the Past Participle of the following verbs:

Locate; pump; consist; separate; call; enter; weight; know; flow; feel; bring; take; give.

Ex. 4. Find and translate sentences with predicates in Simple Tenses, Passive Voice:

1. A crown is used to cap or completely cover a tooth. 2. Traditionally, the teeth to be crowned are prepared by a dentist and records are given to a dental technician to fabricate the crown or bridge. 3. When decay is first detected in a tooth, the usual action taken by the dentist is to provide the tooth with an intracoronal restoration. 4. Preparation of a tooth for a crown involves the irreversible removal of a significant amount of tooth structure. 5. Inlays, onlays and all varieties of crowns can also be fabricated out of ceramic materials, such as in CAD/CAM technology(computer-assisted design/computer-assisted manufacture).

Ex. 5. Make up the following sentences interrogative:

1. Traditionally more than one visit is required to complete crown and bridge work. 2. When preparing a tooth for a crown, the enamel is totally removed. 3. If the tooth is restored with a full gold crown, the restoration need only be 5 mm in thickness. 4. If porcelain is applied to the gold crown, an additional minimum of 1 mm of tooth structure needs to be removed. 5. Crowns are fabricated in a laboratory or with CAD/CAM technology. 6. Crowns are constructed to reproduce the original functional dimensions of the tooth they are restoring.

Дата добавления: 2015-07-11