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选修7《Grammar》优质课PPT课件下载
使用派生词;
3.通过理解和掌握构词法,扩大词汇量。
Recently, Liu has become popular. He got four medals at the 2017 Sports Meeting in our school, but he was unhealthy when he was young. Instead of giving up running , he trained hard and finally he proved himself to be one of the best runners in our school.
加前缀(prefix):
healthy --- ___healthy
加后缀(suffix):
develop --- develop_______
既加前缀又加后缀:
employ ---____employ_______
un
ment
un
ment
派生词(derivation)
前缀:一般只改变
词义,不改变词性
后缀:不改变词义
只改变词性。
一、派生法(Derivation)
否
定
前
缀
un-
dis-