I am glad to

結(jié)構(gòu)︰主詞(人)+be 動詞+情緒形容詞(如 glad，sorry)+不定詞。

說明︰不定詞放在情緒形容詞如 glad，sorry，happy，sad，surprised，troubled等字之后修飾，這是不定詞副詞的用法。

I am glad to see him. 我很高興看到他。

Sue was troubled to see trash everywhere. 蘇看到到處是垃圾很苦惱。

Sara was excited to see the rock band. 莎拉看到搖滾樂團很興奮。

too to

結(jié)構(gòu)︰主詞+動詞+too+形容詞/副詞+(for+sb.)+to-不定詞

說明︰此句型意為太而(使某人)不能。too 為副詞，可修飾副詞形容詞.too 后也可接含有形容詞的單數(shù)名詞，即too+形容詞+a+單數(shù)名詞不定詞，也可以是too much+不可數(shù)名詞+to或too many+復(fù)數(shù)名詞+to。該句型如提到對某人來說，則加入for+人。該句型表示否定的意義，若加上附加問句，則須用否定，如例句8.

He walked too slowly to catch up with me. 他走得太慢而不能跟上我。

It is too dark in this room for me to read a book. 房間太暗，使我無法看書。

This problem is too difficult for them to settle. 這對他們來說真是一個難解的問題。

The price is too low for customers to believe. 價格低得令顧客難以相信。

He is too young a boy to do it. 他還太小，無法做這事。

He has too much work on hand to go picnicking with us.

他手頭的工作太多了，不能跟我們?nèi)ヒ安汀?/p>

He has too many things at his disposal to go home early.

有太多事要他處理，使他不能早點回家。

The boy is too young to do it， isnt he? 這男孩年紀(jì)太輕不能做這件事，不是嗎?

I am too glad not to

結(jié)構(gòu)︰主詞+動詞+too+形容詞/副詞+not+to-不定詞

說明︰此句型意為太而必能非常。本句型具有雙重否定作用，也可將否定詞移到動詞部分。

Our professor is too capable not to solve this difficult problem.

我們教授非常有才干，必定能解決這一難題。

This customer is too honest not to deceive us. 這位客戶非常誠實，不會騙我們。

I am too glad not to help the boy.

我太樂意了而不能不幫助那男孩我非常樂意幫助那男孩。

It is never too late to learn. 活到老，學(xué)到老。

I am only too to

結(jié)構(gòu)︰主詞+動詞+only too+形容詞/副詞+to-不定詞

說明︰此句型意為非常。only 除去了 too 的否定意義，only too 相當(dāng)于 very，very much 等。

I am only too glad to accept your kind invitation. 我非常高興地接受你的邀請。

He is only too willing to serve friends. 他極愿為朋友效勞。

I am only too pleased to do business with you. 我能和你做生意，太高興了。

ADJ/ADV + enough to

結(jié)構(gòu)︰主詞+動詞+形容詞/副詞+enough+(for sb.)+to-不定詞

說明︰此句型意為足以。enough 可做副詞形容詞用，在此做副詞，可修飾副詞形容詞，恒置于被修飾的副詞形容詞之后。

We need several men strong enough to do the work.

我們需要幾個強壯得足以做這件工作的人。

They bought a house large enough for ten persons to live in.

我們買了一棟房子，大得足以供十個人住。

He is competent enough to fill that position. 他足以勝任那職位。

He ran fast enough to catch the thief. 他跑得飛快，足以抓住那小偷。

Our teacher is old enough to retire. 我們老師年紀(jì)已夠得上退休了。

The assignment is few enough to be finished within half an hour.

作業(yè)很少，足能在半小時內(nèi)完成。

I am glad to

結(jié)構(gòu)︰主詞(人)+be 動詞+情緒形容詞(如 glad，sorry)+不定詞。

說明︰不定詞放在情緒形容詞如 glad，sorry，happy，sad，surprised，troubled等字之后修飾，這是不定詞副詞的用法。

I am glad to see him. 我很高興看到他。

Sue was troubled to see trash everywhere. 蘇看到到處是垃圾很苦惱。

Sara was excited to see the rock band. 莎拉看到搖滾樂團很興奮。

too to

結(jié)構(gòu)︰主詞+動詞+too+形容詞/副詞+(for+sb.)+to-不定詞

說明︰此句型意為太而(使某人)不能。too 為副詞，可修飾副詞形容詞.too 后也可接含有形容詞的單數(shù)名詞，即too+形容詞+a+單數(shù)名詞不定詞，也可以是too much+不可數(shù)名詞+to或too many+復(fù)數(shù)名詞+to。該句型如提到對某人來說，則加入for+人。該句型表示否定的意義，若加上附加問句，則須用否定，如例句8.

He walked too slowly to catch up with me. 他走得太慢而不能跟上我。

It is too dark in this room for me to read a book. 房間太暗，使我無法看書。

This problem is too difficult for them to settle. 這對他們來說真是一個難解的問題。

The price is too low for customers to believe. 價格低得令顧客難以相信。

He is too young a boy to do it. 他還太小，無法做這事。

He has too much work on hand to go picnicking with us.

他手頭的工作太多了，不能跟我們?nèi)ヒ安汀?/p>

He has too many things at his disposal to go home early.

有太多事要他處理，使他不能早點回家。

The boy is too young to do it， isnt he? 這男孩年紀(jì)太輕不能做這件事，不是嗎?

I am too glad not to

結(jié)構(gòu)︰主詞+動詞+too+形容詞/副詞+not+to-不定詞

說明︰此句型意為太而必能非常。本句型具有雙重否定作用，也可將否定詞移到動詞部分。

Our professor is too capable not to solve this difficult problem.

我們教授非常有才干，必定能解決這一難題。

This customer is too honest not to deceive us. 這位客戶非常誠實，不會騙我們。

I am too glad not to help the boy.

我太樂意了而不能不幫助那男孩我非常樂意幫助那男孩。

It is never too late to learn. 活到老，學(xué)到老。

I am only too to

結(jié)構(gòu)︰主詞+動詞+only too+形容詞/副詞+to-不定詞

說明︰此句型意為非常。only 除去了 too 的否定意義，only too 相當(dāng)于 very，very much 等。

I am only too glad to accept your kind invitation. 我非常高興地接受你的邀請。

He is only too willing to serve friends. 他極愿為朋友效勞。

I am only too pleased to do business with you. 我能和你做生意，太高興了。

ADJ/ADV + enough to

結(jié)構(gòu)︰主詞+動詞+形容詞/副詞+enough+(for sb.)+to-不定詞

說明︰此句型意為足以。enough 可做副詞形容詞用，在此做副詞，可修飾副詞形容詞，恒置于被修飾的副詞形容詞之后。

We need several men strong enough to do the work.

我們需要幾個強壯得足以做這件工作的人。

They bought a house large enough for ten persons to live in.

我們買了一棟房子，大得足以供十個人住。

He is competent enough to fill that position. 他足以勝任那職位。

He ran fast enough to catch the thief. 他跑得飛快，足以抓住那小偷。

Our teacher is old enough to retire. 我們老師年紀(jì)已夠得上退休了。

The assignment is few enough to be finished within half an hour.

作業(yè)很少，足能在半小時內(nèi)完成。