重温一道引起思绪混乱的题..。..。。。After a wonderful meal, they told stories and sang songs by the campfire. 表示“在……之后"的句式:after+从句/doing/n. after I arrived => After my arrival 在我到达之后 完成同义句转换:when the plane arrived = After his arrival, we have a party。 = = 时态使用重大的规则:(12 字原则)主过从过,主将从现,主现从任【主将从现】常见的有以下三种情况: 一、When/if 引导的主句是一般将来时,从句用一般现在时。I’ll tell her the good news when she comes back。当她回来的时候,我将把这个好消息告诉她.If it doesn't rain, he will come here on time。假如不下雨,他会按时来这儿的。二、假如主句是祈使句,那么从句要用一般现在时。 Don’t laugh at me when I make a mistake。 我犯错误的时候不要笑话我。 三、假如主句是含有情态动词的一般现在时,从句多用一般现在时。You should be quiet when you are in the reading room。 在阅览室时应保持宁静。 【主过从过】常见的有以下二种情况:1.直接引语变成间接引语2.宾语从句中,当主句的谓语动词为过去时态时,从句须用表示过去的某种时态.例如:He asked when they would go to the party.他问他们什么时候将去参加聚会。Miss Green said she had been to Beijing before.格林小姐说她以前曾经去过北京. 【主现从任】常见的有以下一种情况:在宾语从句中,当主句的时态为现在的某种时态(一般现在时、现在进行时、现在完成时等)后面从句时态不受主句限制,可选用各种适合的时态。例如:Do you know when we'll have a football match?你知道我们什么时候进行足球赛吗?You know he has gone to Shanghai.你知道他已去上海了. 【特别关注】1.当宾语从句表述的是客观事实、科学真理、现在的习惯动作以及格言等时,只能用一般现在时.例如: The teacher told us that light travels faster than sound.老师告诉我们光速比音速要快。 2.假如主、从句表示的动作是一前一后发生的,则先前的用过去完成,在后的只能用一般过去时态。When he got there, the train had left. 当他到那儿的时候,火车已经开了。 【小试身手】1。 If he ___ harder , he will catch up with us soon.(04 北...