在英语中，动词后面加`to`可以构成不定式，不定式通常由`to`加原形动词构成，如`to walk`、`to eat`等。以下是一些常见的动词后需要加`to`的例子：
表示目的或意图
want to do
decide to do
hope to do
plan to do
offer to do
refuse to do
seem to do
tend to do
表示能力或可能性
afford to do
manage to do
wish to do
dare to do
manage to do
be able to do
表示情感或态度
like to do
dislike to do
love to do
hate to do
prefer to do
表示请求或命令
ask to do
beg to do
tell to do
order to do
表示忘记或记得要做某事
remember to do
forget to do
regret to do
mean to do
表示开始或继续做某事
begin to do
start to do
continue to do
表示其他特定含义
need to do
have to do
dare to do
be used to do
get used to do
be accustomed to do
请注意，有些动词后面可以加`to`也可以不加，如`want`、`like`、`prefer`等。此外，有些动词后面跟`to`后需要跟宾语，如`arrange for someone to do something`。
这些动词后面加`to`构成的短语在句子中通常用来表达目的、意图、能力、愿望、请求、情感、开始或继续做某事等多种含义。