have no choice but to RV 無法選擇，不得不

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have no choice but to RV. v.不得不；必須

have no option but to RV.

=can’t but V.R

=can’t help but V.R.

=can’t help Ving 忍不住(做了)~

=can’t resist ＋Ving 不可抗拒(做了)~

He has no choice but to laugh. 他禁不住笑起來。

=He has no option but to laugh.

=He can’t but laugh.
= He can’t help but laugh.

=He can’t help laughing.

=He can’t resist laughing.

Tony had no choice but to go on business. Tony不得不出公差。

=Tony had no option but to go on business.

=Tony couldn’t but go on business.

=Tony couldn’t help but go on business.

=Tony couldn’t help going on business.

=Tony couldn’t resist going on business

can’t=cannot 過去式couldn’t

Tony couldn’t do anything but go on business.

= don’t have any choice but RV (沒得選擇)不得不~

Tony couldn’t choose but go on business.

Tony didn’t have any choice but go on business.

He enjoys going hiking. 他喜歡健行活動。

He enjoys nothing but going hiking.

He think of doing something right. 他只想到做對的事。

=can’t help oneself = can’t resist + Ving

I can’t help myself. 我情不自禁. 我無法控制自己。

Daniel can’t help himself (from ) eating sweet food. 丹尼爾無法克制自己吃甜食。

= Daniel can’t resist eating sweet food.

can’t take it 無法忍受