2) 如在too前有否定詞，則整個句子用否定詞表達肯定， too 后那個詞表達一種委婉含義，意 為"不太"。
It’s never too late to mend. (諺語)
改過不嫌晚。
3) 當too 前面有only, all, but時，意思是：非?！?等于very。
I’m only too pleased to be able to help you. 我非常高興能幫助你。
He was but too eager to get home. 他非常想回家。
12 、不定式的特殊句型so as to
1） 表示目的；它的否定式是so as not to do。
Tom kept quiet about the accident so as not to lose his job.
湯姆對事故保持沉默是為了不丟掉他的工作。
Go in quietly so as not to wake the baby.
輕點進去，別驚醒了嬰兒。
2) so kind as to ——勞駕
Would you be so kind as to tell me the time?
勞駕，現(xiàn)在幾點了。
13 、不定式的特殊句型Why not
"Why not +動詞原形"表達向某人提出建議，翻譯為："為什么不……?" "干嗎不……?"
例如：
Why not take a holiday?
干嗎不去度假?
14 、不定式的時態(tài)和語態(tài)
時態(tài)\語態(tài) 主動 被動
一般式 to do to be done
進行式 to be doing
完成式 to have done to have been done
完成進行式 to have been doing
1) 現(xiàn)在時：一般現(xiàn)在時表示的動詞，有時與謂語動詞表示的動作同時發(fā)生，有時發(fā)生在謂語動詞的動作之后。
He seems to know this.
I hope to see you again. = I hope that I’ll see you again. 我希望再見到你。
2) 完成時：表示的動作發(fā)生在謂語動詞表示的動作之前。
I’m sorry to have given you so much trouble.
He seems to have caught a cold.
3) 進行時： 表示動作正在進行，與謂語動詞表示的動作同時發(fā)生。
He seems to be eating something.
4) 完成進行時：
She is known to have been wreaking on the problem for many years.
15、 動名詞與不定式
1） 動名詞與不定式的區(qū)別：
動名詞表達的是： 狀態(tài)，性質(zhì)，心境，抽象，經(jīng)常性，已發(fā)生的
不定式表達的是： 目的，結(jié)果，原因，具體，一次性，將發(fā)生的
2） 接不定式或動名詞，意義相同。
3） 動名詞與不定式語義不同的有11 組：
1 stop to do stop doing
2 forget to do forget doing
3 remember to do remember doing
4 regret to do regret doing
5 cease to do cease doing
6 try to do try doing
7 go on to do go on doing
8 afraid to do afraid doing
9 interested to do interested doing
10 mean to do mean doing
11 begin/ start to do begin/ start doing
It’s never too late to mend. (諺語)
改過不嫌晚。
3) 當too 前面有only, all, but時，意思是：非?！?等于very。
I’m only too pleased to be able to help you. 我非常高興能幫助你。
He was but too eager to get home. 他非常想回家。
12 、不定式的特殊句型so as to
1） 表示目的；它的否定式是so as not to do。
Tom kept quiet about the accident so as not to lose his job.
湯姆對事故保持沉默是為了不丟掉他的工作。
Go in quietly so as not to wake the baby.
輕點進去，別驚醒了嬰兒。
2) so kind as to ——勞駕
Would you be so kind as to tell me the time?
勞駕，現(xiàn)在幾點了。
13 、不定式的特殊句型Why not
"Why not +動詞原形"表達向某人提出建議，翻譯為："為什么不……?" "干嗎不……?"
例如：
Why not take a holiday?
干嗎不去度假?
14 、不定式的時態(tài)和語態(tài)
時態(tài)\語態(tài) 主動 被動
一般式 to do to be done
進行式 to be doing
完成式 to have done to have been done
完成進行式 to have been doing
1) 現(xiàn)在時：一般現(xiàn)在時表示的動詞，有時與謂語動詞表示的動作同時發(fā)生，有時發(fā)生在謂語動詞的動作之后。
He seems to know this.
I hope to see you again. = I hope that I’ll see you again. 我希望再見到你。
2) 完成時：表示的動作發(fā)生在謂語動詞表示的動作之前。
I’m sorry to have given you so much trouble.
He seems to have caught a cold.
3) 進行時： 表示動作正在進行，與謂語動詞表示的動作同時發(fā)生。
He seems to be eating something.
4) 完成進行時：
She is known to have been wreaking on the problem for many years.
15、 動名詞與不定式
1） 動名詞與不定式的區(qū)別：
動名詞表達的是： 狀態(tài)，性質(zhì)，心境，抽象，經(jīng)常性，已發(fā)生的
不定式表達的是： 目的，結(jié)果，原因，具體，一次性，將發(fā)生的
2） 接不定式或動名詞，意義相同。
3） 動名詞與不定式語義不同的有11 組：
1 stop to do stop doing
2 forget to do forget doing
3 remember to do remember doing
4 regret to do regret doing
5 cease to do cease doing
6 try to do try doing
7 go on to do go on doing
8 afraid to do afraid doing
9 interested to do interested doing
10 mean to do mean doing
11 begin/ start to do begin/ start doing