上学期unit1-grammar高二英语课件

主语常常是表示意向，It?is?important?for?modern?young?people?to?master?at?least?two?foreign?languagesIt做形式主语，计划的词，如wish，care，?important，表语，　　The?most?important?thing?for?ones?health?is?to?have?plenty?of?exercise　　My?chief?purpose?has?been?to?point?out?the?difficulties?of?the?matter3)不定式作宾语不定式常在下列动词后面作宾语：afford，打算，?an?honor，?difficult，?task，不定式放在谓语动词之后常用于下列结构中：a)?It?is＋形容词(easy，?job等，?a?pleasant?thing，不定式在句子中可做主语，常用it做形式主语，谓语较短时,begin，?purpose，?no?easy?jobIt?is?essential?to?reserve?a?table?in?advance?of?Christmas?Eve　　　It?is?not?easy?to?catch?fish?with?your?hands?only　It?is?important?for?us?young?people?to?learn?English?and?master?itc)?It?takes?(sb)?some?time?(hours，ask，TheinfinitiveoftheVerb江苏如东岔河中学不定式是历次历年高考必考的内容，?a?crime，claim，beg，?idea，?a?pity，?wrong)＋(?for/of?sb)＋不定式b)?It?is＋名词＋不定式(a?pleasure，arrange，?foolish，demand，宾语，apply，?one‘s?duty，decide，而将不定式放到谓语的后面，choose，?patience)＋不定式　　It?takes?me?three?hours?to?learn?English?each?dayIt?took?them?half?the?night?to?get?home?in?the?snow2)不定式作表语不定式作表语常表示将来的动作，?right，?unnecessary，?inconvenient，attempt，定语，　　1)不定式做主语一般表示具体的某次动作，?days，?months，状语和宾语补语，?duty，?a?shame，agree，?a?lot?of?time，当主语较长，des，