高分翻译，还有追加50分！！！！！

派生词缀和词根结合，或者粘着词根和粘着词根结合构成单词的方法，叫做派生法（derivation）。用派生法构成的词叫做派生词（derivative）。
词根是派生词的基础，在同一词根上可以缀加不同的词缀，表示不同的意思，并可表示各种不同的词类。我们要逐个地记住成千上万个单词是困难的（要知道英语中少说也有五十万个词呢！），但是词根、前缀和后缀的数量毕竟有限，难怪美国读者文摘社出版的《如何扩大你的词汇能力》（How to Increase Your Word Power）一书把词根、前缀、后缀称为"扩大词汇的三把钥匙"，而其中前缀和后缀的数量尤其少，使用的场合却特别多。
Derivation is used to form new words that combine from derivational affix and roots, or the formation of several bound roots. Derivative is formed of the word from derivation.
Root is the basis of the derivative. One root can express different meanings and word class, with adding different affix. It is difficult to remember hundreds and thousands of vocabulary (English has at least 50,000(500 thousand words.), but the sum of root, prefix and suffix are limited. No matter the Reader Journal book of How to Increase Your Word Power, it called root, prefix and suffix as “three keys to broaden/enlarge your vocabulary”. Among those vocabularies, the sum of prefix and suffix are especially few, but the using occasion is particular/extraordinary/specific a lot.

自己翻译的，就语法纠正过了，就是用词上，你看看合不合你的标准。

难度不小```你还是用机器翻译吧```

Affix and the roots of derivatives, and adhesive or adhesive roots stemming a word with the method, called derivative Act (derivation). Using a derivative of the word called derivative words (derivative).
Stemming the basis of the word is derived from the same roots can be augmented different Affix that a different meaning, and that the various parts of speech. We have to remember one by one of thousands of words is difficult (to know that there are at least in English 500,000 word?), But roots, prefixes and suffixes, after all, the number is limited, no wonder the United States published by the Reader's Digest and Social Council "How to expand your vocabulary capacity" (How to Increase Your Word Power) a book of the roots, prefixes, suffixes known as the "expansion of the three key words", of which the number of prefixes and suffixes especially small, but the use of special occasions And more.

相当难啊

Affix and the roots of derivatives, and adhesive or adhesive roots stemming a word with the method, called derivative Act (derivation). Using a derivative of the word called derivative words (derivative).
Stemming the basis of the word is derived from the same roots can be augmented different Affix that a different meaning, and that the various parts of speech. We have to remember one by one of thousands of words is difficult (to know that there are at least in English 500,000 word?), But roots, prefixes and suffixes, after all, the number is limited, no wonder the United States published by the Reader's Digest and Social Council "How to expand your vocabulary capacity" (How to Increase Your Word Power) a book of the roots, prefixes, suffixes known as the "expansion of the three key words", of which the number of prefixes and suffixes especially small, but the use of special occasions And more.选我

有点难度啊...
英语:Affix and the roots of derivatives, and adhesive or adhesive roots stemming a word with the method, called derivative Act (derivation). Using a derivative of the word called derivative words (derivative).
Stemming the basis of the word is derived from the same roots can be augmented different Affix that a different meaning, and that the various parts of speech. We have to remember one by one of thousands of words is difficult (to know that there are at least in English 500,000 word?), But roots, prefixes and suffixes, after all, the number is limited, no wonder the United States published by the Reader's Digest and Social Council "How to expand your vocabulary capacity" (How to Increase Your Word Power) a book of the roots, prefixes, suffixes known as the "expansion of the three key words", of which the number of prefixes and suffixes especially small, but the use of special occasions And more.