來源:網絡來源 作者:中考網編輯 2020-08-23 18:27:39
中考網整理了關于2021年初中英語語法之現在完成時的用法,希望對同學們有所幫助,僅供參考。
持續性用法表示動作發生于過去,但在過去并未完成,而是從過去一直持續到現在,此時多半會連用表示持續性的時間狀語;后者指的是動作發生于過去,且在過去已經完成,但這個過去發生的動作對現在有影響,而說話者正好要強調的就是這個影響,此時一般沒有明顯的時間狀語,主要通過上下文來理解。如:
1. Years ago we didn't know this , but recent science _______that people who don't sleep well soon get ill.
A. showed B. has shown C. will show D. is showing
【分析】答案選B。由表示對照的Years ago和recent可知,"以前不知",但"現在已經證明了",所以用現在完成時。
2.He was hoping to go abroad but his parents_______that they won ' tsupport him unless he can borrow money from the bank.
A. were deciding B. have decided C. decided D. will decide
【分析】答案選B。因賓語從句中的時態是一般將來時,jhd58zwf主句中的謂語動詞不可能是過去時態,排除逸項A和C;由語境判斷,不是"將要決定",而是"現在已經決定",所以排除D ,而選B。
3.My brother is an actor. He_______in several film so far.
A. appears B. appeared C. has appeared D. is appearing
4.The country life he was used to_______greatly since 1992.
A. change B. has changed C. changing D. have changed
【分析】答案逸B。 since 1992這類時間狀語通常與現在完成時連用。主句主語是The country life ,句中he was used to是省略了關系代詞that的定語從句。
【注】還要特別注意以下這些習慣上要與現在完成時連用的短語和句型:already , just , so far , in [for, during] the last [past] few years , it is the first time that , by now , for five years , up to [until] now , since 1980等。但現在咒成時不與具體的過去吋間狀語或when連用。
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2021年初中英語語法匯總
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