but后的非谓语形式

something was wrong. 我这才真的意识到出了什么事了。
I cannot help but _s_a_y_____(say) “Sorry!” 我只能说声“抱歉”了
ห้องสมุดไป่ตู้
have no + N but + to do There be +N but + (to) do...
We had no choice but _t_o_w__a_it_ outside. 我们除了等待别无选择。 There is no choice but _t_o_w__a_it__ outside.
2 ．but 前有 can/could, can't/couldn't(help), can't choose 等时， but 后接不带 to 的不 定式。如：
He can't but _a_g_r_e_e___(agree) . 他不得不同意。
I could not help but _r_e_a_l_iz_e__(realize) that
除了收回你的话外，你还能做什么？
She can do anything but _si_n_g_ (sing) . 她除了不会唱歌，什么都会。
Last evening I did nothing but _w_a_t_c_h_(watch) TV. 昨天晚上我看电视，没有做别的事。
but（除...外）前有do及其各种 变形时，but后用动词原形。 简称“有do 无 to”
He seldom comes home except _t_o_v_i_s_it__ his mother.
除了看望妈妈，他极少回家。
but前的谓语动词或短语动词要求接动名词 时，but后应接动名词。例如：
He thinks of nothing but _m_a_k_i_n_g_(make) money. 除了赚钱，他什么也不想。
That official was afraid of nothing but _ea_t_i_n_g_(eat) pork. 那位官员只是怕吃猪肉。 He could bear anything but h__ea_r_i_n_g_(hear)
such bad news. 他听到这样的坏消息确实会忍受不了。
We have nothing to do but _a_s_k_ you for help. 我们只得请你帮忙了。
I hate doing nothing but _l_o_o_k_ on. 我讨厌袖手旁观，什么事也不干。
What can you do but _ta_k_e_ (take) back what you said?
but 后接 to do 还是 do... 还是doing?
but 后接不带 to 的不定式的情况 1 ．当 but 前是实义动词 do 的各种形式时， but 后接不带 to 的不定式，即接动词原形。 如：
Mary did nothing but w__r_it_e_ a letter last night 玛丽昨晚只写了一封信。