2. The Suffixes.
Text: Radioactivity.
Ex.
1. Pronounce the following words:
radioactivity
['reidiouaek'tivi-
accuracy I'^jurasil
comprise
[kam'praiz] human ['hju:man] expose [iks'pouz] whereas [wear'sez]
excite [ik'sait] luminescent [,lju:mi'nesnt] explanation ^ [-ekspla
neijan] vital ['vaitl]
diagnostics
[vdaiag
nostiks] disease [di'zi:z]
usher ['л/з] era fiara]
phenomenon [fi'nomman] occur [a'ka:] uranium [jua'reinjam] decade [di'keid] essence ['esns] nuclide I'nju-.klaidl milestone ['mailstoun] carbonaceous [yka:ba neijas]
Ex 2 Read the following word combinations:
» 'reidiouEek'ti-
a period of time [9 'piariad 9V 'taim]
Ex. 3. Read the following words, mind the stresses:
, itripns'b’ml medicine [ medsin]
Ex. 4. Pronounce the following proper names:
Henri Becquerel ['henri bek'rel]
E Rutherford ['rAdafsd]
J. Chadwick ['tfaedwik]
№
1
№ 2
№ 3
The student translating the article knows English very well.
Translating the article, the student does not consult the dictionary.
While translating the article the student did not consult the dictionary.
The article translated by this student is very interesting.
The article translated was sent to him.
When translated the article was sent to him.
If translated well the article will be sent to him.
The experiment being carried out in our laboratory is very important for my work.
Being carried out in our laboratory the experiment can be studied thoroughly by our students.
Ex. 5. Form Participle I (Active and Passive) from the following verbs according to the model:
Model: to build—building—being built.
to work out, to observe, to get, to send, to write, to bring, to charge, to make.
Ex. 6. Form Participle II from the following verbs according to the model:
Model: to translate — translated to give — given
make, detect, bring, get, write, work, build, read, speak, leave, charge, produce, observe, take, pass, discover.
Ex. 7, Open the brackets choosing the correct forms of the Participles:
1. A positively (charging, charged) particle having the mass of the electron was discovered in 1932. 2. The scientist found that X-rays (produced, producing) were complex. 3. According to this theory (dealt with, dealing with) atomic
structure the nucleus is a very small, compact, central part of an atom. 4. Oppositively (charged, charging) particles exert forces of attraction on one another. 5. Elements (composed, composing) of atoms containing only one or two valence electrons usually form positive ions. 6. (Investigated, investigating, having investigated) this phenomenon the scientists can make some important conclusions. 7. The work (doing, done) by these research-workers resulted in many new discoveries. 8. The ions (involving, involved) can be used as a highly sensitive detector of radiation. 9. The investigation (followed, following) by many experiments was of great importance. 10. The nuclei (formed, forming) in this reaction are unstable.
Ex. 8. Find the sentences in which the word “producing” is to be translated as “производя”:
1. The factory has been producing artificial fibres for ten years. 2. Producing new kinds of materials one should be particular about their quality. 3. The plant producing these goods was built last year. 4. This shop is producing new optical devices. 5. While producing a new kind of crucibles engineers have to pay attention to the material they are to be made of.
The machines producing these goods must be renewed.
Ex. 9. Find the sentence in which the word “investigated” is to be translated as “исследованный”:
1. The substance being investigated can be used in this experiment. 2. The new method was investigated in our research Institute. 3. The fibres investigated by them were strong enough.
Ex. 10. Complete the sentences according to the model:
Model; 1. Examining this substance under the microscope the scientist . . .
Examining this substance under the microscope the scientist found many impurities.
Ex.
11. Remember the following nouns:
Singular
spectrum
datum
phenomenon
Plural
spectra
data
phenomena
81
analysis analyses
nucleus nuclei
Ex.
12, Remember the suffixes
strength
— to strengthen length—to lengthen intense — to intensify
class—to classify vapour—to vaporize
Ex.
13. Remember the suffixes
to
work — worker to produce—producer to assist— assistant
crystal —to crystallize real — to realize black —to blacken deep — to deepen
forming nouns:
to accelerate—acceleration to extract — extraction to develop—development