一,写出下面动词的过去式,过去分词和现在分词 1.catch 2.stand
一,写出下面动词的过去式,过去分词和现在分词
1.catch
2.stand
3.hurt
4.slip
5.fall
二,连词成句
1.think,you,that,better,do,had,your,i,homework
2.help,let,you,me
3.himself,has hurt,he
4.afraid,i,that,can,get,am,i,not,up
5.slippd,he,hownstairs,fell,and
要写出下面动词的过去式，过去分词和现在分词啊