2019屆高考英語基礎語法復習
17. 一般現在時代替現在完成時
1） 有些動詞用一般現在時代替完成時，如hear, tell, learn, write , understand, forget, know, find , say, remember等。例如：
i hear （= have heard） he will go to london. 我聽說了他將去倫敦。
i forget （=have forgotten） how old he is. 我忘了他多大了。
2） 用句型 " it is … since…"代替"it has been … since …"。例如：
it is （= has been） five years since we last met. 從我們上次見面以來，五年過去了。
18. 一般現在時代替現在進行時。
在here comes…/there goes…等句型里，用一般現在時代替現在進行時。例如：
there goes the bell. 鈴響了。
19. 現在進行時代替將來時
1） 表示即將發生的或預定中計劃好的活動。例如：
are you staying with us this weekend? 和我們一起度周末好嗎?
we are leaving soon. 我們馬上就走。
2） 漸變動詞，如get, run, grow, become, begin以及瞬間動詞die等。例如：
he is dying. 他要死了。
20.時態一致
1） 如果從句所敘述的為真理或相對不變的事實，則用現在時。例如：
at that time, people did not know that the earth moves. 那時，人們不知道地球是動的。
he told me last week that he is eighteen. 上星期他告訴我他十八歲了。
2） 賓語從句中的，助動詞ought, need, must, dare 的時態是不變的。例如：
he thought that i need not tell you the truth. 他認為我不必告訴你真相。
三.鞏固練習:
1、i’ ll give the book to him as soon as he ________ back.
2、has the baby ________ crying yet? (stop)
3、i don’ t know whether mother __________ me to beijing next month.(take)
4、she _______ on her coat and went out. (put)
5、 “what are they doing?” “they __________ ready for the sports meeting.” (get)
6、the boy asked his mother ________him go and play basketball.(let)
7、i’m sorry to keep you ____________ for a long time. (wait)
8、it ________ (take) him half an hour _______ (finish) his homework yesterday.
9、if it ________ an interesting film, we’ll see it tomorrow. (be)
10、they usually ________ (do) their homework after supper.
11、listen! who _____________(sing) in the next room now?
12、__________(be) your parents in shanghai last year?
13、mr. yu _____________(teach) us maths since 1982.
14、they will have a trip to the great wall if it _________ (not rain) tomorrow.
15、li ming often _________ (listen) to the radio in the morning.
16、a: “father, may i go out and play football?” b: “_____you ____(do) your homework?”
17、all the people in the town are glad ______(hear) that a famous musician ___ a concert this saturday evening.( give)
18、our teacher told us if it _____(not snow) we would visit the science museum the next day.