work ---- working
sleep ----- sleeping
study ----- studying
2、动词以不发音的-e结尾，要去-e加-ing
take ----- taking
make ----- making
dance ----- dancing
3、重读闭音节的动词，要双写词尾字母，再加-ing
cut ----- cutting
put ----- putting
begin ------ beginning
4、以-ie结尾的动词，把变成y再加-ing
lie ----- lying
tie ----- tying
die ----- dying
口诀：现在进行ing,以e 结尾要去e，除去几个特殊词，系住tie-tying死去die-dying要躺下lie-lying，直接ie变成y,
需要双写加ing的词，请背下来!
swim-swimming run-running put-putting sit-sitting begin-beginning plan-planning
cut-cutting get-getting shop-shopping chat-chatting stop-stopping regret-regretting
dig-digging prefer-preferring trek-trekking
规则：1.必须是重读音节(一个音节的词，本身就是重读音节)
2.必须是闭音节(以一个或几个辅音字母(r 除外)结尾而中间只有一个元音字母的音节，称为闭音节)