ГРАММАТИКА: Инфинитив и инфинитивный оборот в функции дополнения.
Section I
Ex. 1. Practise your pronunciation.
a) covalent [koo'veilont], distribute [dis'tribjot], electron [f lcktron], ethyl [cOilj, ['i:0ail] (chem. dimethyl [dai'mcOil], [-mi.Oail] (-chcm.), ether [Ч:0э].
alcohol ['arlkohnl], hydroxyl [luu'droksil], California [,кзе1эТэ:тэ]. through [Oru:], clcctronic [ilek'tronik]
b) thcjrlcc'tronic^'structurcvofmolcculcs, the^'number^of^'valcncc electrons, un'sharcd^c'lcctronNpairs, in^'such^aXway, inJtsu'outcrwshell, for^'othcrNmolecules, for^'ovcr^ 'hundrcdyears, atjhe^bc'ginning^ofjhc Nccntury
c) It is the co'valcnt/'bond | that is .represented by a 'dash in the 'valence- bondformulas.
Ex. 2. Pay attention to the structure of the following words. Translate them into Russian.
a) hydrogen, hydroxyl, hydrate, hydride, hydrocarbon, hydrolysis, hydrolyzc, hydroxide, hydrochloric acid
b) a chemical, a proposal, a general, a crystal, a credential, a liberal, a criminal
c) sulphide, halidc, fluoride, hydride, bromide, oxide, sclcnidc, nitride, iodide, chloride
Ex. 3. Define the meanings of the word way in the following sentences:
1. In what way is hydrogen produced? 2. The teacher didn't like the way the student was handling the instrument. 3. The situation is rather difficult, I don't sec any way out. 4. The compound obtained in this way is usually pure enough. 5. In some nay or odicr, the work must be finished today. 6. It is a long way from here to his home. 7. On his way home he met N. 8. By the way, what is the symbol of manganese? 9. The investigation that is under way in dicir laboratory is of particular interest.
Ex. 4. Find the predicate, the subject and the object in the following sentences:
1. The chcmical properties show ethyl alcohol to contain one hydrogen g atom attached to an oxygen atom. 2. Before 1900 many chcmists believed water to be the only solvent in which typical ionic reactions could be carried out. 3. Dalton assumed atoms to be indivisible particles of the elementary substancc.
Text 20 A