ГРАММАТИКА: Инфинитив и инфинитивный оборот в функции определения. Придаточное предложение в функции определения.
Section I
Ex. 1. Practise your reading.
It is often true that the most common concepts we use arc the most difficult to define precisely.
Ex. 2. State what parts of speech the following words belong to:
solution, solute, solvent, soluble, solubility, solubilization, dissolve, dissolvable, dissolution, insoluble, solvation
Ex. 3. Define the meanings of the word either in the following sentences:
1. Either of these techniques may be used at high temperatures. 2. There are substanccs that cannot be clcarly classified either as solutions or as mixtures. 3. A solution of soap in water has properties and composition which might be described as either inhomogencous or homogeneous depending on the experiment wc do. 4. Chlorinc docs not burn either in air or in pure oxygen. 5. Either of the elements of Group IA of the periodic tabic has a single electron in die outermost level. 6. This is a very useful reference book, I wish I had it in my library. — I haven't got it either. 7. There are three journals on the tabic, you may take either of them.
Ex. 4. Analyse the following sentence:
One must know the purity of a chemical to be used in the reaction.