都要跟名词形式的介词后加什么，所以如果是都要变成名词形式。动词后加ing就相当于名词了。To，作为不定式的特定符号，后面是要求加动词原形的。
拓展：（介词词组后需要加动词ing形式）
be addicted to 沉溺于;对…上瘾
be opposed to 反对
devote oneself to献身于;专心于
be devoted to 致力于;忠诚于
be admitted to 被…录取;准进入
be reduced to 沦为
reduce…to…使…沦为
be attached to附属于;喜欢;依恋
be adjusted to 适应
be known to 为…所知
be married to 和…结婚
be sentenced to被判处
be connected to 和…连在一起
be exposed to 暴露于;遭受
be compared to 被比喻成
compare… to…把…比作…
be engaged to 与…订婚
be / become / get accustomed to // accustomed to 惯于;有…习惯
be engaged to 与…订婚
get/settle down to 着手做
lead to 导致
object to反对;不喜欢;不赞成
put one’s mind to全神贯注于
give rise to 引起
look forward to 盼望
stick to 坚持
pay attention to 注意
attend to 专心;注意;照料
see to 负责;注意
contribute to对…作贡献;有助于
make contributions to对…作贡献
apply oneself to 致力于
come close to几乎;将近
reply to 回答
add to 增加
add up to 加起来
in addition to除…之外
turn to转向;求助于
look up to 尊敬
admit to承认
belong to 属于
take to 喜爱;开始
cling to 附着
fall to 开始
respond to 回答;对…作出回应
accustom oneself to 使自己习惯于
amount to等于
prefer… to…更喜欢
set an example to
给…树立榜样
refer to 谈到;参考;查阅
agree to sth. 同意某事 (比较:agree to do sth. 同意做某事)
prefer… to…更喜欢
take / make at rip to到…地方去
join…to…把…和 …连接起来
turn a blind eye to对…视而不见
turn a deaf ear to 对…充耳不闻
show honor to向…表示敬意
put an end to(bring… to an end) 结束
set fire to 放火烧……
drink (a toast) to 为……干杯
propose a toast to 提议……
happen to… 发生了……事
occur to sb. 想起;想到
total up to 总计达
be close to 几乎;将近
hold to 坚持;抓住
help oneself to 随便用……
hold on to 抓住;固守
do harm to 对……有害处
do wrong to 冤枉某人
date back to 追溯到
when it comes to… 谈到……时
come to 来到;达到;结果为 (比较:come to do sth逐渐做某事)
give an eye to着眼于
have an eye to doing 打算
the key to ……的答案
describe to 向……描述
treat sb. to sth. 请某人吃……
trust sth. to sb.把某物委托给某人
pay a visit to 参观……
access to 进入;取得的方法
be a stranger to 不习惯;对……陌生
on one’s way to 在去某处的路上;在达成某事的过程中
be kind to 对……和善
be important to 对……重要
be senior to 年龄长于……
be equal to 和……相等
be particular to ……所特有的(比较:be particular about 对……过于讲究;挑剔)
be subject to 服从;隶属;易遭\受\患
be familiar to 为 ……熟悉
be similar to 和……相似
be open to 对……开放
be loyal to 对……忠诚
be helpful to对……有益处
be useful to对……有用
be good to sb对某人好 (比较:be good for 对……有益处)
be bad to 对……不好
be bad for(比较:对……有害处)
be new to 对……不习惯;对……陌生
as to 关于;至于
next to(否定词前)几乎;
be due to do sth.预定要做某事
next to ……的旁边
due to 由于;归因于……
thanks to 多亏了;由于
owing to 由于;因……的缘故
in / with regard to 关于
in /with relation to 关于;就……而论
subject to 在……条件下;依照
be given to 沉溺于
be related to 与…相关
get down to着手做
lead to 着手做
object to / be opposed to 反对
put one’s mind to全神贯注于
be equal to 胜任
devote oneself to献身于
give rise to 引起
look forward to 盼望
pay attention to 注意
lead to通向
see to 负责
access to 接近(某地的)方法
be addicted to 沉溺于… 对…上瘾
according to 根据
contribute to 为…作贡献