後面加動詞原形，構成動詞不定式，即ask to do.

ask to譯為：要求;邀請。 擴展資料

　　In that case, ask to speak in person as soon as possible and say sorry ．

　　在這種情況下,請儘快當面說對不起。

　　It seems only reasonable to ask students to buy a dictionary.

　　要學生買一本詞典，好像也沒什麼不合情理。

　　I had no option but to ask him to leave.

　　我別無選擇，只有請他離開。

　　Was it really fair to him to ask him to do all the work?

　　要他做所有的工作對他真的.公平嗎？

　　One of these days you'll come back and ask me to forgive you.

　　你很快就會回來請求我原諒的。

　　If anyone comes in before I get back, ask them to wait.

　　如果在我回來之前有人來，就請他等一等。

to+動詞原形，構成動詞不定式。

常用不定式的場合是：

一、常接不定式作賓語的動詞有want，love，learn，agree，decide，hope，refuse等。例如：

I'm learning to skate on real ice. 我正在真正的冰上學滑冰。

二、動詞不定式常用作目的狀語。例如：

He came to give us a talk yesterday. 他昨天來給我們作了個報告。

Mrs Brown went to see her doctor. 布朗夫人去看她的醫生了。

三、tell，ask，want，order，get，wish，warn，teach，invite等動詞後常跟不定式作賓語的補足語，構成tell/ ask……sb to do sth(“告訴/請……某人做某事”)結構。例如：

Could you ask him to call me，please? 請你讓他給我打個電話，好嗎?

四、不定式短語作定語放在被脩飾的詞語之後。例如：

I have a lot of work to do. 我有許多事情要做。