1. to do
2. writing
3. finish
4. to get
5. help
6. are ...doing..
7. play
8. drawing
9. writing
10.Skating
11.to eat
12. did not do
13. close
14.playing
15. Don't run
16.her
17.making
18. does...have
19.yourself
20.say
21.are swimming
22.playing
23.studied
24.to buy
25.went
26.taught
27.did...spend
28.having
29.Do.. practice
to do --------writing-------finish---gotten
to do
writing
finish
to get
help
are doing
play
drawing
to write
Skating
to eat
didn't do
closed
playing
Don't run
her
making
does have
yourself
say
are swimming
playing
studied
to buy
went
taught
did spend
having
Do practice
to do writing finish to get help are doing play drawing to write skating to eat didn`t do closing playing don`t run her making\to make do have yourself
上面这些我看了看基本就这几种变化形式:动词ing、to+动词、动词原形,有些需要根据前面所给词的词性(如情态动词must后加动词原形),有些要看动词所处的位置,有些要与谓语动词相搭配。而代词的变化形式有宾格(she——her)反身代词(you——yourself)等等。
say are swimming playing studied to buy went taught did spent having do practice
错误肯定是在所难免,查缺补漏、、、、希望能对你有所帮助吧。