現(xiàn)在完成時(shí) 的結(jié)構(gòu)是怎樣的?

熱心網(wǎng)友

現(xiàn)在完成時(shí)可表示持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)，動(dòng)詞一般是延續(xù)性的，如live, teach, learn, work, study, know。 　 過(guò)去時(shí)常用的非持續(xù)性動(dòng)詞有come, go, leave, start, die, finish, become, get married等。　舉例：　 I saw this film yesterday。　　（強(qiáng)調(diào)看的動(dòng)作發(fā)生過(guò)了。）　 I have seen this film。 　　（強(qiáng)調(diào)對(duì)現(xiàn)在的影響，電影的內(nèi)容已經(jīng)知道了。）　 　 Why did you get up so early?　　（強(qiáng)調(diào)起床的動(dòng)作已發(fā)生過(guò)了。）　 Who hasn't handed in his paper?　　　（強(qiáng)調(diào)有卷子，可能為不公平競(jìng)爭(zhēng)。）　 She has returned from Paris。　　　 她已從巴黎回來(lái)了。　 She returned yesterday。 　　 她是昨天回來(lái)了。　 He has been in the League for three years。　　(在團(tuán)內(nèi)的狀態(tài)可延續(xù))　 He has been a League member for three years。　　(是團(tuán)員的狀態(tài)可持續(xù))　 He joined the League three years ago。　 　　( 三年前入團(tuán)，joined為短暫行為。)　 I have finished my homework now。　 用于現(xiàn)在完成時(shí)的句型 1）It is the first / second time…。 that…結(jié)構(gòu)中的從句部分，用現(xiàn)在完成時(shí)。　 It is the first time that I have visited the city。　 It was the third time that the boy had been late。2）This is the… that…結(jié)構(gòu)，that 從句要用現(xiàn)在完成時(shí)。　 This is the best film that I've (ever) seen。 　　　 這是我看過(guò)的最好的電影。　 This is the first time (that) I've heard him sing。　這是我第一次聽他唱歌。。

熱心網(wǎng)友

多看些英語(yǔ)語(yǔ)法方面的??

熱心網(wǎng)友

主語(yǔ)＋have/has＋動(dòng)詞＋其他