ask for是可分動詞片語?!?

1，名不正，則言不順；言不順則事不成，本句ask for是片語動詞，而動詞片語(verb phrase )是由一個主詞+一個(含)以上助動詞組成，例•: I (am feeling 動詞片語) good.
2，本句ask for 區別為可分及不可分I ask him for a promise.但亦可寫成I ask a promise from him.惟代名詞him只能置中，其他名詞前後均可I turn off the radio.=I turn the radio off.

ask---often with the indirect object omiyyed; call for an answer to;
eg:-Ask his name;---They asked me what my name was .
-----Do you ask the price ?
-----Have I ask too much ?
ask for trouble=ask for it
eg:-behave in such a way that trouble is likely
-----His behavior is asking for trouble
-----He is asking too much..
If request to be allowed:-
eg:-I must ask you to excuse me.
-----He asked permission to give up.
-----He asked $3000 a month as rent for that room.

•常見的不可分的雙字動詞片語
句型:不及物動詞+介系詞+受詞
介係詞:for, at , to ,about, with , on,of, into, after
👉I wait for the bus.
👉I get off the train.
👉I worried about you.

•常見的可分雙字動詞片語
介副詞(up , off, out, down, away)
及物動詞+介副詞+受詞(一般名詞)

及物動詞+受詞(一般名詞/代名詞)+介副詞
代名詞為受詞如:me you her him it them us

👉I pick up the garbage.= I pick the garbage up. =I pick it up.
off 本身為介副詞，但是get off 為不可分式片語
注意:並不是所有的雙自動詞片語都會依照上面的規定走
on為「介係詞」也可當「介副詞」，所以可分與不可分式都會有相關得片語
（以上有誤歡迎糾正🙏

ask當及物動詞用：
to ask someone for dinner =𨘋請某人赴宴
to ask someone for something
to ask ... for ...

ask當不及物動詞用：
to ask for a night's lodging = 求給住一夜
to ask for something
to ask for ...

「不及物動詞」需要使用「介系詞」，後面才能接「受詞」。

你可以ask一個人去做某件事（或給某件東西），但ask for某件東西。

ask for 應該是可分動詞片語。

一個簡單測試或參考附文：
在ask和for中間可否插入另一字而不影響它的意思和寫作用意：
ask for 的本意是"請求"或"要求"

I ask him for promotion.

查查看看能否保持"請求"或"要求"原意？
意思是：向"他"要求升職

回看基本的動詞片語：
I ask for a promotion.
我提出要求要升職。
這句只是指出我的要求，對理解沒改變，只是不及上句的詳細或深入描寫吧。