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1、1專四必備語法 專四必備語法一、時態(tài)、語態(tài)時態(tài)、語態(tài)需要掌握的要點:1.表達將來時的形式:(1)在時間、條件、讓步從句中,一般現在時代替將來時,但要注意區(qū)別從句的類型,如:I’ll tell him when you will ring again. 我告訴他你什么時候再來電話。(賓語從句)比較:I’ll tell him when you ring again.你再打電話時我告訴他。(狀語從句)(2)在 make sure, make
2、 certain, see (to it) 后的 that 從句中,謂語動詞用一般現在時代替將來時,如:See to it that you include in the paper whatever questions they didn’t know the answer to last time.(include 不能用 will include 或其他形式)2.完成時是時態(tài)測試的重點,注意與完成時連用的句型和時間狀語:(1)by
3、/between/up to/till +過去時間、since、by the time/when +表示過去發(fā)生情況的從句,主句用過去完成時。如:We had just had our breakfast when an old man came to the door.Between 1897 and 1919 at least 29 motion pictures in which 33.完成進行時指動作在完成時的基礎上還要繼續(xù)下去
4、。如:The company has been promising a rise in salary for ages, but nothing has happened.時態(tài)、語態(tài)答題思路:(1)先根據選項的區(qū)別點確定考題要點為時態(tài),然后回到題句中尋找給出的或暗示的時間狀語,縮小選擇范圍,進而選出正確答案;(2)根據謂語動詞與句子主語或非謂語動詞與其邏輯主語的關系,確定句子是主動語態(tài)還是被動語態(tài)。二、不定式1.不定式做主語(1)引導邏
5、輯主語的介詞:不定式的邏輯主語一般由介詞 for 引導,但下列表示人的性格行為特征的形容詞做表語時, 不定式的邏輯主語則由 of 引導:absurd, bold, brave, courageous, careful, careless, clever, wise, foolish, silly, stupid, good, nice, kind, thoughtful, considerate, greedy, generous, h
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