unit 4.ppt

1、計算機(jī)英語,人民郵電出版社,21世紀(jì)高等學(xué)校計算機(jī)規(guī)劃教材,司愛俠 張強(qiáng)華 編著,Unit 4 Operating System,退出,New Words,New Words,New Words,New Words,Phrases,video card視頻卡 sound card聲卡 along with 連同.一起, 隨同.一起 break into攻入，破門而入, 侵占 a member of許多 come out 出現(xiàn) lie in存在于,Phrases,be plagued with被.折磨；被.煩擾；苦惱 look for尋找, 期待 be around for出現(xiàn)，存在 gain

2、illegal access to非法訪問,Abbreviations,CD 光盤(Compact Disc),Text,請老師朗讀并講解課文,Notes,1 It translates commands from the operating system or user into commands understood by the component part it interfaces with. 本句中，from the operating system or user是一個介詞短語，作定語，修飾和限定它前面的commands 。understood by the component

3、part it interfaces with是一個過去分詞短語，作定語，修飾和限定它前面的commands。在該過去分詞短語中，it interfaces with是一個定語從句，修飾和限定the component part。translates into 的意思是“把翻譯成”。,Notes,2 The operating system makes these interfacing functions along with its other functions operate smoothly and these functions are mostly transparent to

4、the user. 本句中，The operating system作主語，makes作謂語，these interfacing functions along with its other functions作賓語，operate smoothly是一個不帶to的動詞不定史短語，作賓語補(bǔ)足語。 英語中，當(dāng)make、let、have、see、hear、watch、notice、feel等動詞后面用不定式作賓語補(bǔ)足語時，不定式都不帶to。這一點(diǎn)特別重要。,Notes,3 These can happen due to a software bug typically in the operati

5、ng system, although computer programs being run on the operating system can make the system more unstable or may even crash the system by themselves. 本句中，due to a software bug typically in the operating system 是一個原因狀語。due to 的意思是“由于，因為”。although computer programs being run on the operating system ca

6、n make the system more unstable or may even crash the system by themselves是一個讓步狀語從句。在該從句中，computer programs作主語，being run on the operating system作定語，修飾computer programs，can make作謂語，the system作賓語，more unstable作賓語補(bǔ)足語，or是連詞，連接并列謂語，意思是“或者”。,Notes,4 The greatest problem with these operating systems lies i

7、n the fact that not as many application programs are written for them. 本句中，that not as many application programs are written for them是一個同位語從句，作the fact的同位語，說明其內(nèi)容。 英語中，同位語用來對一個詞或詞組的內(nèi)容加以說明。它通常位于與之同位的詞或詞組之后。 另外, lie in的意思是“存在于”。,Notes,5 It is primary used to be a server rather than a workstation and should not be used by anyone who does not understand the system. 本句中，It指Unix。who does not understand the