Change of word class(词性转换) When a prefix( 前缀) or a suffix (后缀) is added to some words, the word class of the original word can be changed.E.g. N--->V: length( 长度) +en---->lengthen (加长) . N.--->Adj. Fool (傻子) +ish--->foolish (愚蠢的) . Suffixes “ize”and “ous” can also be used to change a noun to a verb or an adjective. Complete the chart below by adding differentforms of each word. Use a dictionary to look up any words that you don’t know.The X here indicates there is no form in that category.