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必修4《Grammar》PPT课件优质课下载
使用派生词;
3.通过理解和掌握构词法,扩大词汇量。
These are some pictures of our class, all about taking exercise. Some students in the pictures are very healthy and energetic, but they always give up running, which makes me angry. I hope everyone can take an active part in sports and has a healthy body, because health is wealth.
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-