Now, you know how to build complex sentences using independent clauses.

现在，你知道如何使用独立子句构建复杂的句子了。

Sonia, can you help us with other sentences like this?

Sarah 说，而且还必须准备接待明天要来访的朋友。 And I have to prepare for friends who are coming to visit tomorrow。本句关系代名词互所引导的子句，就是前面的名词 friends，来看例句。 I have to cook some food for the people who are coming to dinner。

Up in space, you experience something called microgravity.

Hi， I'm Jack. Today's usage tip is to look at the sentence form of 词 suggest， ask， demand that 动词 suggest， ask， demand 都含有建议、要求或是命令的意味 後面接 that 字句表示提议或要求的内容that 则可以省略喔另外，that 子句中的词无是单数或复数动词都一律使用圆形动词也可以上助动词should来强化所建议或要求的事情的语气来看个例句The museum asks every visitor be checked for prohibited items这间要求每位访客都要接受是否携带违禁品的检查。

We use the present simple verb in our 'if' clause and we use the future tense 'will' in our main clause so we use 'will' along with a bare infinitive verb.

我们在“if”子句中使用简单的一般现在时动词，在句中使用将来时“will”，所以就是“will”一个不定式动词。

With all conditional sentences, the order of these clauses is not fixed, so you can swap them around.

在所有条件句中，这些子句的顺序不固定，所以你可以交换它们。

When you step into your hotel room for the first time, what options do they give you?

请注意动名词的动作执行者必须为要子句的词 否则将会造成语意的错乱 来看例句 Upon recovering from jet lag， she explored the city with excitement. 她一克服时差就兴奋的探索这座城市？

We need it to complete the clause in the sentence.

我们需要它来完成句子中的子句。

There are also subordinating conjunctions, which join dependent and an independent clause.

还有从属连词，它们将独立的和非独立的子句连接在一起。

So is the world made for introverts or extroverts?

今天的 usage tip 是介绍 it has been 过去分词 that 的句型 它用於间接引述 以许词 it 作为开头 搭配现在完成式的被动语态 表达一直以来都有 that 子句所述的张 常用於本句型的动词 大多具有声称或是揭露的含义 除了 argue 以外呢 此句型也可以使用 claimreveal， report 等字词使用被动语态可淡化消息来源并将重点放在所张的内容上来看例句It has been revealed that several celebrities were involved in the scandal据透露有多位名人卷入这起丑闻？

Sentences with too many clauses are difficult to follow, so it's generally better to limit your complex sentences to two or, maximum, three clauses.

子句太多的句子会很难理解，所以一般最好把复杂句子限制在两个或最多三个子句。

You can also make a complex sentence by adding a dependent clause, or even several dependent clauses, again using conjunctions to connect them.

你也可以通过添一个从属子句，甚至几个从属子句来造一个复杂的句子，同样地也是使用连词来连接它们。

You generally need a comma at the end of the first clause, before the conjunction, but comma rules are quite flexible in English, so you won't always need a comma.

你通常需要在第一个子句的结尾和连词之前一个逗号，但是逗号规则在英语中非常灵活，所以并不总是需要逗号。

Do you remember the definition of a dependent clause?

你还记得从属子句的定义吗？

In this section, you're going to learn about complex sentences with two independent clauses.

在本节中，大家将学习带有两个独立子句的复合句。

I'll leave without you is an independent clause, so it makes sense by itself.

我就不等你了是一个独立的子句，所以它本身就有意义。

Again, start moving down in small steps from the start of the clause.

同样，从子句的开头开始小步向下移动。

Then, you need another, independent clause to complete the sentence.

然后，您需要另一个独立的子句来完成句子。

The head of a clause is the key word that determines its nature.

子句的头部是决定其性质的关键词。

Okay, so that's with the sub clause at the beginning.

好的，这是子句放在开头的情况。

Finally, you can use a colon between two independent clauses.

最后，你可以在两个独立的子句之间使用冒号。