What’s the meaning of this suffix?

6. Translate starting from the first component:

1. atomic cardinal isotopic maximum number natural negative positive	4. absolute elliptical harmonic molecular motion planetary sinusoidal thermal
2. electrostatic static negative charge electrical positive	5. fundamental cathode charged particle elementary resonance
3. critical lower limit upper	6. cotton heat insulation silicon hydrothermal

7. Read the following. Why are these verbs divided into three groups?

A	B	C
used described compared called	decreased developed increased placed switched	attracted depended heated translated

8. Give the three forms of the following irregular verbs.

For example: know – knew – known

be – …; have – …; give – …; show – …; see – …; take – …

Find more in a dictionary and learn them.

9. Choose the appropriate English equivalents:

известный —1. knew; 2. known; 3. know

показанный—1. show; 2. showed; 3. shown

увиденный— 1. see; 2. seen; 3. saw

помещенный — 1. place; 2. placing; 3. placed

изолированный— 1. insulate; 2. insulated; 3. insulating

данный — 1. give; 2. given; З. gave

взятый— 1. take; 2. took; 3. taken

названный — 1. called; 2. calling; 3. call

использованный — 1. using; 2. use; 3. used

10. Choose the appropriate Russian equivalents to Participles II:

A. 1. compared; 2. defined; 3. shown; 4. obtained; 5. decreased; 6. described; 7. called

1. показанный; 2. полученный; 3. описанный; 4. сравниваемый; 5. названный; 6.уменьшенный; 7. определенный

B. 1. increased; 2. placed; 3. taken; 4. known; 5. amplified; 6. given; 7. switched on

1. помещенный; 2. известный; 3. данный; 4. включенный; 5. увеличенный; 6. усиленный; 7. взятый

11. Do not translate! Define where the subject is the doer of the action.

1. a) The grid controls the flow of electrons. – b) The grid is placed between the cathode and anode.

2. a) A large negative voltage is applied to the grid. – b) We do not apply a large positive voltage to the grid.

3. a) Transistors are used in this function. – b) We use transistors for amplification.

4. a) New devices are being installed here at the moment. – b) They are installing new devices here now.

5. a) The charged particles inside the material can be set in motion. - b) We can set the charged particles inside the material in motion.

6. a) Physicists classify materials according to their electrical properties. – b) Materials can be classified according to their electrical properties.

7. a) Classification is based on the ability of a material to conduct electricity. - b) We base our classification on the number of charged particles.

8. a) Metals, for example, having many free electrons, can readily conduct current at room temperature. – b) Look at this device! Current is being conducted.

How does the use of the Passive Voice depend on the doer of the action?