【一般將來時】

1.(2009陜西) Dr. Smith, together with his wife and daughters, __________ visit Beijing this summer.
A. is going to B. are going to C. was going to D. were going to
答案：A
解析：句意“Dr. Smith將在今年夏天和妻子女兒們一起游覽北京”。本題考查主謂一致。由this summer可知本句應(yīng)用一般將來時，故排除C、D；together with連接并列主語時謂語動詞單復數(shù)應(yīng)取決于其前面的主語，故選A。

2.(2008全國II) If their marketing plans succeed, they __________ their sales by 20 percent.
A. will increase B. have been increasing?C. have increased D. would be increasing
答案：A
解析：在if條件從句中，用一般現(xiàn)在時來指代一般將來時，可以得知他們的市場運作計劃還沒有成功，所以增加銷售額也是個將來的動作，應(yīng)該用will increase。

【過去將來時】

1.(2009湖南) When he _______ the door, he couldn’t find his keys.
A. would open B. opened C. had opened D. was to open
答案：D
解析：句意“當他要開門的時候，發(fā)現(xiàn)鑰匙不見了”。was to do在此表示wanted to do或intended to do，would do在這里有情感意義，所以被排除。