Summary: 動詞不定式用作定語， 放在被修飾的名詞后面。1. 動詞不定式作定語常放在名詞或不定代詞后面作后置定語, 表示尚未發生的動作。We have much homework to do tonight. 2. 名詞前有first, last, next, only等詞以及最高級修飾時, 其后要用動詞不定式。She was the first woman to win the gold medal in the Olympic Games.3. 抽象名詞attempt, ability, chance, desire, determination, decision, plan, way或不定代詞something, nothing等后面常用不定式作后置定語。Janis Adkins has the ability and desire to do useful work. 4. 當名詞與定語之間存在動賓關系時。She is a nice person to work with.5. 當名詞與定語之間存在主謂關系時。We must find a person to do the job.6. 當名詞與定語有同位關系時。We got the order to leave the city. Step 3 Practice(1) The airport ______________(complete) next year will help promote tourism in this area. (2) Do you have anything _____(do) tonight? (3) The best way __________(improve) your English is to join an English club. (4) Miss Liu is a very nice person__________(work) with. (5) China is the third country in the world__________(send) men into space. (6) Mary had great determination _____________(achieve) her goal.(7) The German girl has the ability ___________(learn) Chinese well.(8) I have something important __________(tell) you.Answers: (1)to complete (2)to do (3)to improve (4)to work (5)to send (6)to achieve (7)to learn (8)to tell