Question

to do sth.是动词不定式吗？

Answer 1

加原形:
情态动词和助动词等,如:
can,could,may,should,might,must,ought,need,have,let,make,help
sb
(to)do
sth.
加不定式
want,would
like,like,love,be
going
to,go
on,hate,begin,continue,start,ask,tell,afford,agree,aim,appear,arrange,believe,
care,choose,claim,come,consent,dare,decide,demand,desire,determine,decline,
expect,elect,fail,offer,happen,seem,refuse,wait,pretend,promise,wish,hope,
mean,long,learn,seek,intend,tend,manage,prepare,remember,forget,plan
加ing
start/begin/keep/feel
like
/practice/like/allowed/pay
attention
to
/be
used
to/consider
+doing
sth.(所有介词后面都加doing
sth.)
see/hear/find/watch
sb.
doing
sth
keep/prevent/stop+from
doing
sth