现在分词变化规则

现在分词变化规则
1 .一般情况下直接加ing
think---thinking sleep---sleeping
study---studying speak---speaking say---saying
2 .以不发音的字母e结尾的单词，去掉字母e，再加ing wake---waking hope—hoping live-living make---making come---coming drive-driving move-moving give-giving take---taking leave---leaving practice——practicing
have---having dance----dancing ride----riding write---writing arrive-arriving
※注意※这里的e必须不发音，若发音，则不能去掉，如see→seeing
3.以重读闭音节结尾，呈现“辅，元，辅”结构的动词，先双写末尾的辅音字母，再加ing
stop---stopping sit---sitting run---running forget---forgetting begin---beginning
例如：begin，cut, get, hit, run, sit, stop, set, swim, fit, shop, forget,put等。

4. 以ie结尾的动词，把ie改为y ，再加ing
lie---lying die-dying tie-tying
5.以辅音字母加-y结尾的动词变现在分词要直接加-ing Study-studying fly-flying cry-crying carry-carrying
动词过去式的变化规则
1.一般情况下在动词原形后直接加-ed
如：want-wanted ,play-played
2.以不发音的字母e结尾的动词，直接加-d
如：hope-hoped,live-lived
3.以重读闭音节结尾，呈现“辅，元，辅”结构的动词，先双写末尾的辅音字母，再加-ed
如：stop-stopped
4.以辅音字母加y结尾的动词先变y为i，再加-ed
如：study-studied,worry-worried。