八年級英語動詞不定式有動詞特徵和非動詞特徵，英語動詞不定式的特徵在漢語句式中得到充分體現。以下是小編給你推薦的八年級英語動詞不定式知識點歸納，希望對你有幫助!
get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago.
finish that task in such a short time is really a challenge.
在上述情況下，如果不定式較長，顯得頭重腳輕，則可由代詞讓作形式主語(形式主語it不可由that或this等其他代詞代替)，而將不定式放到後面。如：
made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago. admitted that it is always difficult for him to be on time.
不定式結構所表示的動作是誰做的，即不定式的邏輯主語，通常可以通過for sb. to do sth. 結構表達： is quite important for us to read good books during a general review. is not difficult fot those talented students to pass the exam. 在某些形容詞(如careless，clever，considerate，foolish，good，impolite，kind， naughty，nice，silly，stupid等)作表語時，不定式後可以加of來引匯出其邏輯主語： is very kind of you to tell me the truth. is stupid of him to do such a silly thing.
動詞不定式知識點：不定式作賓語不定式作賓語 不定式作賓語有兩種：一種是及物動詞後直接跟帶to的不定式， 另一種是“及物動詞+疑問詞+帶to的不定式。
及物動詞+帶to的不定式結構: 只能跟動詞不定式的動詞，常見的有: afford， agree， aim， appear， ask， believe， care，claim，decide demand， desire， determine， expect， fail， happen， hesitate， hope， intend， learn， long， manage， offer， pretend， promise， prepare， refuse， seek， swear， undertake，want， wish等。
managed to solve the complicated problem. stranger offered to show me the way. . Smith undertook to build a new plant in South Africa.
動詞+疑問代(副)詞+不定式： 這類動詞常見的有advise， decide， find out， forget， inquire， know， learn， see， regard， remember， teach， tell， understand， wonder等。常見的疑問代(副)詞有: what， when， where， which， how， whether等。
does not know when to start. can decide whether to continue or to stop. 3.I will show you how to deal with it.
有時，不定式可由it代替，而把不定式放到後面去。這可以用這一結構表達：動詞(如find， think，consider，feel等)+it+ 形容詞+不定式。 considers it necessary to make friends with him. find it difficult to finish all the homework before 9 o’clock.
動詞不定式知識點：不定式做表語不定式做表語 一種情況為主語是不定式(表示條件);表語也是不定式(表示結果)：
see is to work means to earn a living.
另一種情況為主語是以aim，duty，hope， idea，job， plan，problem， purpose，thing，wish等名詞為中心的短語，或以what引導的名詞性從句，不定式表語對主語起補充說明作用;例如： aim is to study abroad in the near future. most important thing is to negotiate with them about the price. I want to say is to forget all the unhappy experience.
動詞不定式知識點：不定式作定語不定式作定語 不定式結構作名詞片語修飾語主要有三種類型：
第一種，被修飾的'名詞片語是不定式的邏輯賓語。例如： e was really nothing to fear. gave me an interesting book to read. 如果不定式是不及物動詞，後面就得加相應的介詞。例如： needs a friend to play with. girl has nothing to worry about. have a strict teacher to listen to. ough the film had been on for ten minutes， I still was not able to find a chair to sit on.第二種，被修飾的名詞片語是不定式的邏輯主語;例如： you got a key to unlock the door? action to be taken is correct. e is nothing to be gained by pretending.第三種，被修飾的名詞片語是不定式的同位結構。這類名詞通常是表示企圖、努力、傾向、目的、願望、is算、能力、意向等意義的名詞：ability， attempt， effort， impulse， inclination，wish等。例如： daughter will make an even bigger effort to please her. 2.I have no wishto quarrel withyou. her of them had any inclination to do business with Mary.
動詞不定式知識點：不定式作狀語不定式作狀語 不定式結構在句中作狀語通常都能轉換為限制性狀語從句。例如作原因狀語： are quite surprised to see the great changes taking place in the area. are quite surprised because they see the great changes taking place in the area. was lucky to arrive before dark. was lucky because he arrived before dark.
作目的狀語： raised her voice to be heared better. raised her voice so that she could heard better. went via Heidelberg to miss the traffic jam. went via Heidelberg so that we could miss the traffic jam.
作結果狀語： French football team played so successfully as to defeat the Brazilians. French football team played so successfully that they even defeated the Brazilians. got to the station only to be told the train had gone. got to the station and was told that the train had gone.
不帶to的不定式的使用 動詞不定式通常帶to，但在有些搭配中不帶to，在另一些搭配中可帶to可不帶to
