动词形式的变化
动词根本是原形,
变化形式有四种:
原形词尾加s,
现在第三单人称;
过去原形加ed,
过去分词也相同;
原形加上ing,
现在分词或动名。
原形词尾加s,
如同名词复数式。
若加ed/ing,
以下情况要注意:
词尾有e只加d,
ing去无声e;
词尾ie变成y,
然后再加ing;
辅音之后y结尾,
y要变i加ed;
现在分词不变y,
直接加上ing ;
词尾重读闭音节,
加缀辅音都双写,
r做结尾也一样,
重读音节r双写;
结尾字母是t,
不是重读也双写。
过去分词过去式,
不按规则也有些。
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