Each conditional sentence has an if clause, and a main clause.

每个条件句都有个 if 子句，和个主句。

Is it 'if' plus a present tense and 'will' plus an infinitive?

if 从句用现在时，主句用 will 加动词原形呢？

The main clause is " I read Tony's email" .

主句" 我阅读了托尼发来的电子邮件" 。

Adverb clauses are dependent clauses and need an independent clause to make a complete sentence.

状语从句从句，需要个主句来构成完整的句子。

If the statement is positive then the question tag is negative.

如果主句句的话，反义疑问就否的。

If the statement's negative then the question tag is positive!

如果主句否句的话，反义疑问就的。

We have an 'if' clause and a main clause.

有个“if”子句和个主句。

So, conditional sentences have two parts, the conditional clause and the main clause.

条件句有两个部分，条件从句和主句。

Sorry to interrupt, but you didn't explain what a main clause is.

抱歉，打断下，你还没解释什么主句呢。

One is in the if clause, and one is in the main clause.

在 if 子句中，个在主句中。

The main Clause contains would, could, might, followed by the verb.

主句里包含 would，could，might，后面跟动词。

The main Clause tells us the possible results of the situation.

主句告诉我们这种情景的可能的结果。

It's because she started the sentence with " because" and it lacks a main clause.

因为她的句子以“because”开头，缺乏主句。

Commas are used after introductory words, clauses, or phrases to set them apart from the main sentence.

逗号也可以用在引导词、从句和短语之中，来把它们和主句区分。

Its formula is 'If' plus the past simple or continuous, and 'would' plus an infinitive verb!

它的规则 if 从句用般过去时或过去进行时，主句用 would 加动词原形！

That means we use them to connect subordinating clauses to the main clause of a sentence.

那指我们用它们将个句子的从句和主句连起来。

You'll see patterns between the main statement and the question tag.

你可以看到主句和句尾疑问之间的结构。

A Time Clause can follow a main clause or be in front of a main clause.

时间状语从句可以跟在主句后面，也可以放在它前面。

A main clause is a complete sentence, like, " I ate breakfast."

主句个完整的句子，比如“我吃早餐了。”

Either the main clause or the conditional clause can be at the beginning.

主句或条件句都可以位于句首。