1、一般情況下,直接在動詞後加-ing
work ---- working
sleep ----- sleeping
study ----- studying
2、動詞以不發音的-e結尾,要去-e加-ing
take ----- taking
make ----- making
dance ----- dancing
3、重讀閉音節的動詞,要雙寫詞尾字母,再加-ing
cut ----- cutting
put ----- putting
begin ------ beginning
4、以-ie結尾的動詞,把變成y再加-ing
lie ----- lying
tie ----- tying
die ----- dying