Collins COBUILD English Usage （1992） is a（n） ______dictionary.

You can find the real English equivalents to some Chinese items in ______.

leorn-ian-Tern-en->learn The above is the development of the word "learn" from Old English through Modern English to Middle English. What can be concluded from the above example from the viewpoint of development of English vocabulary?

What is affixation?

Tell the difference between perfect homonyms and polysemants so far as semantic relatedness is concerned.

Guess the meaning of the underlined word in the following sentence and tell what context clue is used. Indian artists were more active in the quattrocento than in the sixteenth century which followed.

Explain full conversion and partial conversion by taking "drinkables" and “the wounded" as examples.

Analyze the causes of ambiguity in the following sentences, and try to make some alterations to eliminate the ambiguity. （a） John ran the car race. （b） They saw her duck.

The English vocabulary can be classified by different criteria and for different purposes. Words may fall into content words and functional words by ______.

The world has approximately 3000 （some put it 5000） languages, which can be grouped into roughly 300 language families and on the basis of similarities in their basic word stock and ______.