1、一般情况下,直接在动词后加－ing

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