动词的过去式怎么变？

Answer 1

英语中动词的过去式通常由动词的现在式加-ed构成，具体变化如下：

结尾是清辅音，要变y为i加ed，如play-played。

结尾是浊辅音或元音，直接加ed，如clean-cleaned，visit-visited。

结尾是e，直接加d，如use-used。

结尾只有一个辅音字母时，双写辅音字母加ed，如stop-stopped。

但也有一些特殊的动词变化，需要单独记忆，如go-went，do-did等。

希望以上内容对你有所帮助。

Answer 2

这跟动词的过去式无关，是非谓语动词。

原形do：1. 一般现在时，非三单 don’t / doesn’t /do /does + do “主将从现”
2. 情态动词 can /may/ must/ will/ would/ should /might/ have to / be able to + do
3. 祈使句，V原形开头
4. 非谓语V Why not do? Why don’t you do? Shall we do? Let’s do
had better(not) do have sb. do let sb. do make sb. do （被动带 to）
感官动词 see / hear/ /watch / notice/ find / feel sb. do (过程)
would rather do than do prefer to do rather than do

doing： 1.be + doing （进行时） be always doing (感情色彩)
2.动词作主语，开头，用doing
3. 介词 in/ at/ for/ of / by / about/ with/ without / after/ before /including + doing
Be / get used to doing (习惯于…) look forward to doing（期待）
prefer doing to doing
4. speaking / listening skill writing paper swimming club singing class
5.There be …doing (主动) There be…+p.p.(被动)
6. have trouble / problem / fun /…time doing
7. 感官动词 see / hear/ notice/ find / feel sb. doing (正在做)
8.put off doing practice doing consider doing keep doing keep sb. doing
finish doing enjoy doing mind doing allow doing give up doing
be busy doing spend…(in) doing end up doing stop doing(停止做)
try doing（试着做）forget doing（忘了做过某事） remember doing（记得做过某事）

p.p. 现在完成时 have/ has +p.p. (since +过去时间点 / in the last few years / over the years / so far / just / ever / never/ already/ yet/ before)
过去完成时 had + p.p.
be+ p.p. 被动语态 get / have sth. + p.p. (让别人做某事)
a boy called / named… (被动意义，过去分词作定语) an organization set up
a book written by…=A book that was written by…

to do want to do would like to do plan to do decide to do wish to do attempt to do
hope to do used to do offer to do mean to do need to do seem to do learn to do fail to do(没能…) pretend to do agree to do can(not) afford to do get ready to do be supposed to do be afraid to do in order (not) to do ask sb.to do tell sb.to do order sb.to do allow sb.to do(sb. be allowed to do) help sb.(to)do encourage sb.to do lead sb.to do prefer to do too…to do 形+enough或enough+名 to do
It’s time to do 疑问词+to do be sure to do stop to do(停下来去做)
forget to do（忘记去做）remember to do（记得去做） try to do （试图、尽力去做）
I’m sorry / happy… to do It’s+名/ 形+to do I find/ think/ feel/ make it+形 + to do
It takes sb. some time to do be willing to do be used to do(被用来) happen to do（碰巧）

用法相同like to do /doing begin to do /doing start to do /doing continue to do /doing