【简答题】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. Fo...
【简答题】It’s school time again! You’re probably feeling excited and maybe a little sad that summer is over. Some kids feel nervous or a little scared(害怕) on the first day of school because of all the new thin...