2019外研版八年級英語上學期期末復習資料
三、 動詞不定式
1、 動詞不定式是由to + 動詞原形構成，即to do.
2、 含有動詞不定式的結構有：
（1）it is + 形容詞/名詞 (for sb.) + to do sth. (對某人來說),做某事是…的
如：it is important for us to learn english. = to learn english is important for us.
it is not right to kill the animals. = to kill the animals is not right.
（2）sb. find / feel it + 形容詞 + to do sth. 某人發覺做某事是…的
如：i find it hard to learn english.
i feel it impossible to finish the work in two days.
（3）want / would like / hope / begin / start / try / need / plan / agree / decide / offer / learn / remember / forget … to do sth.
如：i want to see the film. would you like to go with me?
we plan to take some photos. don’t forget to bring your camera.
（4）ask / tell / invite / want / would like / teach / help sb. to do sth.
(比較: make sb. do sth let sb. do sth. see / hear sb. do sth.)
如：the teacher asks us to keep quiet. he wants everyone to listen carefully.
my friend invited me to see a film. the film made us laugh.
（5）sb. be + 形容詞 + to do sth. 類似于 “我很高興見到你”
如：i am glad to see you. but i am sorry to hear the news.
he was excited to see the pandas.
（6）sth. be+ 形容詞 + to do 類似于 “這個問題很難回答”
如：the question is difficult to answer. the apples are not good to eat.
the water is too dirty to drink.
（7）sth. be + to do sth 類似于 “我的職責是打掃教室”
如：my duty is to clean the classroom. his dream is to travel around the world.
their plan is to build more nature reserves for pandas.
（8）sth. to do 類似于 “吃的東西,住的地方”
如：something to eat / drink, a lot of work to do, places to live in, nothing to say.
（9）表達做某事的目的是什么時，也采用動詞不定式。
如：i got up early to catch the bus. = in order to (為了) catch the bus, i got up early.
the government build more nature parks to protect pandas.
練習：
( ) 1. the teacher told them ________ make so much noise.
a. don’t b. not c. not to
( ) 2. tell him _______ the window. a. to close not b. not to close c. close
( ) 3. the workers want us ______ with them. a. work b. working c. to work
( ) 4. i saw him _______ out of the room. a. go b. went c. to go