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關(guān)閉窗口 三、利用關(guān)鍵詞解題
有的時態(tài)考題中往往會隱含有一個或幾個對解題起著重要作用的詞語，這就是我們所說的“關(guān)鍵詞”。同學(xué)們在解題時，若能充分挖掘這些關(guān)鍵詞，并進(jìn)行合理地分析和推理，對于得出試題的正確答案將會有很直接的幫助作用。如：
1. It is said that the early European playing-cards _________ for entertainment and education.
A. were being designed B. have designed
C. have been designed D. were designed
【解析】答案選D。解答此題的關(guān)鍵是要抓住early這一形容詞。early European playing-cards的意思是“早期歐洲人玩的撲克牌”，既然是“早期”，肯定就是過去的事了，所以用一般過去時。
2. Listen to the two girls by the window. What language _________?
A. did they speak B. were they speaking
C. are they speaking D. have they been speaking
【解析】答案選C。解答此題的關(guān)鍵詞是Listen to…(聽……)，由此可知，空格處要用現(xiàn)在進(jìn)行時態(tài)。
四、用分組排除法解題
做時態(tài)題時，我們有時可以根據(jù)選項的特點(diǎn)進(jìn)行分組，然后根據(jù)句中的相關(guān)時態(tài)信息排除其中的一組，最后再在余下的一組中進(jìn)行分析和比較，從而得到正確答案。比如說，我們可以根據(jù)選項的特點(diǎn)分為“現(xiàn)在組”與“過去組”，“現(xiàn)在組”與“將來組”，“一般組”與“進(jìn)行組”，“進(jìn)行組”與“完成組”，“主動組”與“被動組”，等等（根據(jù)歷年考題的實際情況來看，主要是分為“現(xiàn)在組”和“過去組”）。然后根據(jù)句中的時態(tài)呼應(yīng)規(guī)律，排除其中的一組。如：
1. Susan decided not to work on the program at home because she didn’t want her parents to know what she _________.
A. has done B. had done C. was doing D. is doing
【解析】答案選C。首先將選項分成兩組：A和D為“現(xiàn)在組”，B和C為“過去組”。根據(jù)句中的decided和didn’t want可排除“現(xiàn)在組”A和D；又因為“做”發(fā)生在“決定”之后，而不是之前，不能用過去完成時，排除選項B。
2. John, a friend of mine, who got married only last week, spent $3,000 more than he _________ for the wedding.
A. will plan B. has planned C. would plan D. had planned
【解析】答案選D。首先將選項分成兩組：C和D為“過去組”，A和B為“非過去組”，而根據(jù)句中的got married和last week可推知，此題的答案應(yīng)在“過去組”中。然后再根據(jù)句意比較get married與plan的先后關(guān)系，顯然是先“計劃”，后“結(jié)婚”，而“結(jié)婚”在句中用了一般過去時，故“計劃”要用過去完成時。
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