天和大家来分享的是英语语法知识当中的主语从句(Subject Clause)， 主语从句即在主从复合句中充当主语成分的句子。对此还不太了解的，今天可以一起来往下看看。 It is important. That we all should attend the meeting is important. It is important (that) we all should attend the meeting. 主语从句的连词 1、连词that(句首不可省略)，whether，if引导的主语从句。 That the earth is round is true. It is true that the earth is round. That you missed such an interesting film is a pity. It is a pity that you missed such an interesting film. That she is still alive is sheer luck. It is sheer luch that she is still alive. It remains unknown whether/if we will go for an outing tomorrow. 注意：whether/if含有“是否”的意思，可以加上“or not”，其语义不变。但如果主语从句位于句首则必英语课程，可以让自己掌握更多的知识，提升英语水平。今天和大家来分享的是英语语法知识当中的主语从句(Subject Clause)， 主语须用连接词whether，不用if。 If the meeting will be put off hasn't been decided yet. (X) Whether the meeting will be put off hasn't been decided yet. (√) It is still a question whether/if it is true or not. Whether it is true or not is still a question. 2、连接代词who，whose，what，which，wh+ever引导的主语从句。 Who will come to teach the students is not known. Whom the watch belongs to is unknown. Whose watch was lost is unknown. Whatever he said wasn't true. 3、连接副词 where，when，how，why引导的主语从句。 Where the library is to be built has not been decided yet. When we start the work is an important question. How this happened is not clear. Why she was late for school is quite clear now. 注意：主语从句中的连词不能重叠使用。 That whether we'll go camping tomorrow depends on the weather. (X) Whether we'll go camping tomorrow depends on the weather. (√) 主语从句的语序 主语从句的语序用陈述语序 When will she come is not known.(X) When she will come is not known. (√) What we need is more time. (√) What do we need is more time.(X) 主语从句的时态 主语从句的时态不受主句时态影响和限制。 What caused the accident remains unknown. What he did yesterday will never be known by his mother. It is certain that he will win the match. It is suggested that the work should be done with great care. 主语从句的注意事项 1. 主语从句的谓语一般用单数形式; When the meeting will be held haven't been known yet.(X) When the meeting will be held hasn't been known yet. (√) When he will come is a puzzle. (√) 2. What引导的主语从句，可根据表语决定主句动词的单复数形式; What he needs is that book. What he needs are some books. 3. What引导的主语从句一般不可以改为含形式主语的句子，that则可以; What you said yesterday is right. It is right what you said yesterday.(X) That she is still alive is certain. It is certain that she is still alive. (√) 4. 常见用it做形式主语的主语从句 It is known to all that the gunpowder was first invented by the Chinese. It is true that he has made a very important discovery in chemistry. It is important that we all should attend the meeting. It is a pity that we won't be able to go to the south to spend our summer vacation. It is doubtful whether she will be able to come. It is said that he has gone to Shanghai. It is still a mystery what caused the accident. It seems obvious that we can not go on like this. 如果你想选择线上英语课来进行培训，大家可以来网校了解了解相关的课程和资讯。如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学，扫一扫领200畅学卡。

读一读名人名言，呼吸一下英雄的气息，可以使我们在浮华、虚荣的现实中获得心灵上的支撑，使我们的卑劣与渺小暴露无遗。小编下面整理的有关于英语励志名言名句，希望能对你有帮助。

英语学习的过程中需要大量的积累单词和掌握语法，主语从句的引导词 主语从句

英语学习的过程中需要大量的积累单词和掌握语法，主语从句的引导词 主语从句

remains a puzzle. Which kind of food is the best is still not certain. 为了避免主语显得过长，可以用it 作为句子的主语，把主语从句移到句子的末尾。如： It hasn't been decided yet when the new restaurant will open. It is not clear how gold was found there. It is hard to understand why there is gravity. It is a shame that you have to leave so soon. 以上就是英语主语从句学习内容的分享，希望可以给大在学习英语的过程中带来帮助。 如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学。扫一扫领200畅学卡

句中的动词已经使用了过去时，那么从句中的时态应该使用过去完成时。例如，当主句是“I had already finished my homework when my friend arrived”时，时间状语从句应该使用过去完成时，即“my friend arrived”.如果主语从句是指在主句中描述某个事件发生的时间时，通过从句来表示这个事件发生的时间或时间段。在使用时间状语句中的动词是一般现在时或将来时，那么从句中的时态应该使用过去时。例如，当主句是“I will meet him when he arrived”时，时间状语从句应该使用过去时，即“when he arrived'.需要注意的是，当主句和从句所描述的时间不一致时，从句中的时态也需要根据具体情况而定。例如，当主句是“I wish I could go back to last summer”时，时间状语从句中需要使用过去时，即“when I was on vacation”. 特别提醒：如果大家想要了解更多英语方面知识，或者想要深入学习英语的，可以扫以下二维码，定制沪江网校精品课程，高效实用的个性化学习方案，专属督导全程伴学 在使用时间状语从句时，需要根据主句和从句所描述的时间来确定时态的使用。正确使用时态可以使句子更加准确、清晰，让读者更加容易理解句子的意思。

remains a puzzle. Which kind of food is the best is still not certain. 为了避免主语显得过长，可以用it 作为句子的主语，把主语从句移到句子的末尾。如： It hasn't been decided yet when the new restaurant will open. It is not clear how gold was found there. It is hard to understand why there is gravity. It is a shame that you have to leave so soon. 以上就是英语主语从句学习内容的分享，希望可以给大在学习英语的过程中带来帮助。 如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学。扫一扫领200畅学卡

常用复数，但当one前有the,the only,the very等修饰时，从句的谓语动词要用单数。 8.注意way和time后接定语从句的情况 1、当先行词是way，且意为“方式、方法”时，引导定语从句的关系词有下列三种形式：that/in which/不填。 注意：关系词在从句中必英语中的定于从句有哪些认识呢?which从句须作状语。如果关系词在从句中作主语或宾语，按正常的定语从句分析。 2、当先行词是time时，若time作“次数”讲，应用that引导定语从句，that可省略;若time作“一段时间”讲，应用关系副词when或介词at/during+which引导定语从句。 文中提到的which从句用法及其他知识内容大家都了解了多少了呢?如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学，扫一扫领200畅学卡。

成了一个一般疑问句，询问火车是否在九点到达。 例题5： 陈述句： She has been to Japan. 疑问句： Has she been to Japan? 解析： 在这个例子中，陈述句的主语是 “She”，谓语动词是 “has been”，要将其变为疑问句，同样需要在句首加上助动词 “Has”，然后不需要改变主语，直接保留谓语动词 “has been”，最后在句末加上问号。这样就形英语中，陈述句（declarative sentences）是用来陈述事实、观点或感受的句子，而疑问句（interrogative sentences）则是用来询问信息的句子。在学习英语语成了一个特殊疑问句，询问她是否去过日本。 通过以上例题的学习，希望你能够掌握将陈述句变为疑问句的基本技巧。记住调整语序、添加适当的助动词和标点符号是实现这一转换的关键步骤。继续练习，你会变得更加熟练！   如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学，扫一扫领200畅学卡。

一般放在问首或回尾，特别注意，时间状语从向不允许使用将来时，而应该用现在时替伐。 例如: You will certainly fail in the coming final exams unless you workmuch harder: 期末考试你肯定考不及格，除语的时候语法知识的重要性，大家应该都知道吧!在积累英语知识的过程中，英语语非你更用功。 Ifit doesn't rain tomorrow, we shall go hiking. 如果明天不下雨我们就要去徒步旅行。 【注意】 1、because与 so; (al)though 与 but; if与 so不可以同在一个同子中成对出现。 2、时间、条件、原因，让步状语从向放在向首时需要用逗号与主向隔开。状语从句在写作中的运用写作中能合理、正确地使用状语从问，不但能地道的表达英文习惯，而且还能使文体结构更加严谨、美观。 大家是不是还在纠结如何选择网上少儿英语培训机构，如果你也不太了解的话，如果您对英语学习感兴趣，想要深入学习，可以了解沪江网校精品课程，量身定制高效实用的个性化学习方案，专属督导全程伴学，扫一扫领200畅学卡。