專四語法總結(jié)

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(xiàn)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(xiàn)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(chǔ)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(jù)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(jù)謂語動詞與句子主語或非謂語動詞與其邏輯主語的關(guān)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