[多项选择]In terms of English onomatopoeic words, which of the following statements can be regarded as the truth（）
A. They can be used as verbs, adjectives, adverbs and nouns.
B. In fact they are used most frequently as nouns and verbs, the two most forceful word classes.
C. Onomatopoeic words are small in number in English but they are very active.
D. The grammatical functions they can serve include the subject, the predicate, the object, the attribute and the adverbial.

[单项选择]The following describes the terms on which eBay offers you access to our services.
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[填空题]New words which are created by adding affixes to stems are called ______.

[简答题] The grammatical words which play so large a part in English grammar are for the most part sharply and obviously different from the lexical words. A rough and ready difference which may seem the most obvious is that grammatical words (1)______ have "less meaning", but in fact some grammarians have (2)______ called them "empty" words as opposed in the "full" words of 　(3)______ vocabulary. But this is a rather misled way of expressing the (4)______ distinction. Although a word like the is not the name of something as man is, it is very far away from being meaningless; (5)______ there is a sharp difference in meaning between "man is vile" and "the man is vile", yet the is the single vehicle of this 　　 (6)______ difference in meaning. Moreover, grammatical words differ considerably among themselves as the amount of meaning they 　　 　(7)______