謂語動詞的時態(tài)講解與練習(xí)-全文預(yù)覽
【正文】 的過去式did, 同時注意實義動詞要用原形。He always went to work by bus. 他過去老乘車去上班。以study 為例：否定式疑問式I am not studyingAm I studying?You are not studying,Are you studying?He is not studying.Is he studying?（2）用法：1）現(xiàn)在進行時表示說話時正在發(fā)生或進行著的動作。He is translating a novel. 他在翻譯一本小說。其中be有人稱和數(shù)的變化，第一、第三人稱單數(shù)用was，其他用were.1）過去進行時動詞主要表示在過去某一時刻或某一段時間內(nèi)正在進行或持續(xù)進行的動作。It was getting dark. The wind was rising. 天漸漸黑下來了。第一人稱I, we用shall 或will，其余用will. 其否定式、疑問式和簡單回答形式如下：否定式疑問式I shall/will not study….Shall I study…?You will not study….Will you study…?He will not study….Will he study…?否定疑問式簡單回答（肯定/否定）Shall I not (shan’t i) study…?Yes, you will. No, you won’t.Will you not (Won’t you) study…?Yes, I shall/will. No, I shan’t/won’t.Will he not (Won’t he) study….?Yes, he will. No, he won’t.The sky is black. I think it will rain. 天黑下來了。（2）be going + 動詞不定式1）這種結(jié)構(gòu)表示主體現(xiàn)在打算在最近或?qū)硪瞿呈隆?）這種結(jié)構(gòu)還可以表示說話人根據(jù)已有的跡象認為非?？赡芗磳l(fā)生某事。例如：I won’t (am not going to) tell you my age. 我不（愿意）告訴你我的年齡。例如：I have bought some bricks and I am going to build a kitchen with ，我要用它們蓋個廚房。3）be to + 動詞原形，表示安排、命令或肯定將會發(fā)生的事情；在問句中表示征求意見。這種結(jié)構(gòu)表示正要、即將發(fā)生的事情。一般將來時的關(guān)鍵是記住表示將來的幾種句型及其用法。美國英語所有人稱一律用would. should/would 的簡略形式為’d, 如I’d, you’d。She told me she would e again next week. 她和我說她下周還來。如：He didn’t know he was to bee famous later on. 他不知道以后他會出名?，F(xiàn)在完成時（1）構(gòu)成：現(xiàn)在完成時由助動詞have + 過去分詞構(gòu)成，助動詞have 有人稱和數(shù)的變化。例如： My daughter has just gone out. 我女兒剛出去。 She has been with us since Monday.她從星期一就一直和我們在一起。試比較：They have been to Canada. 他們到過加拿大。用過去完成時，必須有一個過去的時間或動作來作參照，說明在此之前某事已發(fā)生。2）過去完成時動詞可以表示過去某一時刻之前發(fā)生的動作或呈現(xiàn)的狀態(tài)，這一動作一直持續(xù)到過去這一時刻或?qū)⒗^續(xù)下去?，F(xiàn)在完成進行時的構(gòu)成強調(diào)指出動作還未結(jié)束,還要繼續(xù)下去。readingtwohaven39。這本書我已讀了兩個小時了,但我還沒讀完。readhaslike試比較:livingbeenexam.(還在進行)學(xué)生們一直在準備考試。 the train ________(start) at six in the morning.（二）用一般現(xiàn)在時或一般將來時填空4. I don’t know when Bob _________(return), but when he ________(return) I ________(let) you know.5. We _______(send) for a doctor if you ________(be) not better this afternoon.6. The plane ______(be) about to take off. ______ he _______(get) to the airport in time?7. I’m sure the harder you _______(work), the better progress you __________(make).（三）用一般過去時或過去進行時填空8. The fireman ______(go) towards the fire, which ______ still _______(smoke).9. While my father ________(look) through the evening paper, he suddenly _____(let) out a cry of surprise.10. When I _______(enter) the classroom, she _______(not see)me, for she ______(read) a novel.11. When they _______(arrive) at the village, it ________(get) dark, and the wind _______(blow) hard.12. I _______(not know) both of yo
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