二、写出下列动词的过去式和过去分词
1. air ________
________ 2. clean ________
________
3. boil ________
________ 4. wash ________
________
5. type ________
________ 6. empty ________
________
9. paint ________
________ 10. sharpen ________
________
11. have ________
________ 12. go ________
________
13.am/ is ________
________ 14. are ________
________
15. pack ________
_______ 16. leave ________
________
clean,cleaned,cleaned
boil,boiled,boiled
wash,washed,washed
type,typed,typed,
empty,emptied,emptied
paint,painted,painted,
sharpen,sharpened,sharpened
have,had,had
go,went,gone
am/is,was,been
are,were,been
pack,packed,packed
leave,left,left
为你解答。
air - aired - aired
2. clean - cleaned - cleaned
3. boil - boiled - boiled
4. wash - washed - washed
5. type - typed - typed
6. empty - emptied - emptied
9. paint - painted - painted
10. sharpen - sharpened - sharpened
11. have - had - had
12. go - went - gone
13.am/ is - was - been
14. are - were - been
15. pack - packed - packed
16. leave - left - left
