（误）tom asked me if these islands are belonged to america.
（正）tom asked me if these islands belonged to america.
14.中文：中国发生了很大变化。
（误）great changes have been taken place in china.
（正）great changes have taken place in china.
15.中文：战争于一九三七年爆发。
（误）the war was broken out in 1937.
（正）the war broke out in 1937.（take place，break out，happen，belong to等不及物动词或短语动词没有被动语态形式。）
16.中文：我看不清黑板。也许你需要检查你的眼睛。
（误）i can’t see the blackboard very well.perhaps you need to examine your eyes.
（正）i can’t see the blackboard very well.perhaps you need to have your eyes examined.（表示使某物被别人…，通常使用have或get＋物＋过去分词表示。）
17.中文：他命令马上开始工作。
（误）he ordered the work to start at once.
（正）he ordered the work to be started at once.（不定式作宾语补语时，若与宾语是被动关系，要用不定式的被动形式。）
18.中文：他试图不介入政治。
（误）he tried not to have mixed up in politics.
（正）he tried not to get mixed up in politics.（get作系动词，可代替be，后接过去分词表示被动，have无此功能。）
19.中文：据说他很富有。
（误）they say him to have been rich.
（正）he is said to have been rich.（say后不可接不定式，但它的被动语态后可接不定式。）
20.中文：那人被认为是个傻子。
（误）the man thought to be a fool.
（正）the man was thought to be a fool.（主语是动作的承受者而不是发出者，用被动语态。）
1.中文：我要是你，我不会那么做。
（误）i shouldn’t do that if i was you.
（正）i shouldn’t do that if i were you.（表示与现在事实相反的虚拟语气不能用was，只能用were.）
2.中文：要是我父亲现在在这里，他会告诉我该做什么。
（误）if my father were here now， he will tell me what to do.
（正）if my father were here now， he would tell me what to do.（表示与现在事实相反的虚拟语气中，主句的助动词只能用would，might等过去时。）
3.中文：要是我知道她的电话号码，我就会给她打电话了。
（误）if i knew her telephone number， i would have called her.
（正）if i had known her telephone number， i would have called her.（表示与过去事实相反的虚拟语气中，条件从句的动词要用过去完成时。）
4.中文：要是昨天没下雨她也许会来。
（误）if it had not rained yesterday， he might come.
（正）if it had not rained yesterday， he might have come.（表示与过去事实相反的虚拟语气中，主句的动词要用助动词的过去时might，could等＋have＋过去分词。）
5.中文：我不认为我会失败，但要是我失败了，我会再努力。
（误）i don’t think that i shall fail. but if i failed， i would try again.
（正）i don’t think that i shall fail. but if i should fail， i would try again.（表示与将来事实相反的虚拟语气中，条件从句的动词用should加原形动词。）
6.中文：他要是带了钱就会买它。
（误）did he bring some money with him， he would have bought it.
（正）had he brought some money with him， he would have bought it.（表示与过去事实相反的虚拟语气中，条件从句的动词要用过去完成时，若省略if，则用倒装形式。）
7.中文：她要是个男人可能会当选总统。
（误）be she a man， she might be elected president.
（正）were she a man， she might be elected president.（表示与现在事实相反的虚拟语气，不能用was，只能用were；若省略if，则将were放在句首。）
8.中文：我提议提高教师的薪资。
（误）i suggested that the teachers’ wages could be increased.
（正）i suggested that the teachers’ wages should be increased.（suggest当建议讲时，后面的名词从句的主要动词要用should加原形动词，should可以省略。）
9.中文：他这么做是重要的。
（误）it is important that he will do it.
（正）it is important that he do it.（it is important＋that引导的名词从句的动词要用should加原形动词，should可以省略。）
10.中文：他们结婚两年了。
（误）they have married for two years.
（正）they have been married for two years.（表示已婚状态的持续，要用完成时的被动式。）
11.中文：他被所有学生嘲笑。
（误）he was laughed by all the pupils.
（正）he was laughed at by all the pupils.（不及物动词＋介词=及物动词，变被动语态时介词不能省略。）
12.中文：英语(q吧)难学。
（误）english is difficult to be learned.
（正）english is difficult to learn.（英语难学=学英语难，也可说it’s difficult to learn english.原句的主语实际上是不定式的逻辑宾语，不定式要用主动形式。）
