Note that in " if… then" sentences, the word " then" is not required.

注意，在" if… then" 条件句中，" then" 不是必需的。

Note that in if...then sentences, the word " then" is not required.

注意，在“if… then”条件句中，“then”不是必需的。

This is another example of the body's IF THEN sequencing: IF See tiger, THEN jack up cortisol.

这是身体“如果-那么”系统的另外一个例子：“如果”看见老虎，“那么”提高皮质醇水平。

That tells me if I see an " if" , then should use " were" instead of " was" .

那告诉我如果我看到一个 if，那麽我应该用were，而不是was。

If then they're just gonna have to do it themselves.

他们必须自己来。

If, then, entrepreneurs generally act on this expectation, will they in fact succeed in increasing their profits?

那么，如果企业家普遍按照这种期望行事，他们真的会成功地增加利润吗？

These describe procedures as IF-THEN statements.

这些将过程描述为 IF-THEN 语句。

Think about using if then language, if I give you this, then I get that.

考虑使用 if then 语言，如果我给你这个，那么我就明白了。

And that if then I was able to think okay, what should this look like?

然后, 如果我能想好, 这应该是什么样子?

And although I would not want to confuse him until he's much older, if then...- You wouldn't have to confuse him.

不过我还不想让他感到困惑，或许等他大一些… … - 不必让他感到困惑。

If, then, this--the matter--is some definite thing, evidently the numbers themselves too will be ratios of something to something else.

那么，如果这个——物质——是某种确定的事物，那么显然数字本身也将是某种事物与另一种事物的比率。

Even the most optimistic scientists think that fusion power may not be developed for 50 years, if then, if ever.

即使是最乐观的科学家也认为聚变能可能在 50 年内不会被开发出来，如果那时，如果有的话。

If, then, these two varieties be variable, the most divergent of their variations will generally be preserved during the next thousand generations.

那么，如果这两个变种是可变的， 那么在接下来的几千代中， 它们的变异中最不同的通常会被保存下来。

If, then, we cannot trust what we see with the naked eye, why should we trust what we see through a microscope?

那么，如果我们不能相信我们用肉眼看到的东西， 我们为什么要相信我们通过显微镜看到的东西呢？

The second conditional uses the past simple after if then would and the infinitive, that's the most common, or would and the present continuous.

第二类条件句中，if 的后面是一般过去时，然后是 would 加上不定时，这是最常见的，或者 would 加上现在进行时。

23 But if your eyes are bad, your whole body will be full of darkness. If then the light within you is darkness, how great is that darkness!

23 你的眼睛若昏花、全身就黑暗．你里头的光若黑暗了、那黑暗是何等大呢。

If, then, Demetrius and his fellow craftsmen have a grievance against anybody, the courts are open and there are proconsuls. They can press charges.

若是底米丢和他同行的人有控告人的事，自有放告的日子（或作" 自有公堂" ），也有方伯可以彼此对告。

If then we are so certain that other intelligent life exists in the universe, why have we had no visitors from outer space yet?

如果那时我们如此确定宇宙中存在其他智慧生命，为什么我们还没有来自外太空的访客呢？

When we're not using: " if" , then we need to use the gerund after " mind" , " Would you mind" .

当我们不做的时候using: " if" ， 那么我们需要在" mind" , " Would you mind" 之后使用动名词。

If, then, the peculiar distribution of sequoia has not been governed by superior conditions of soil as to fertility or moisture, by what has it been governed?

那么，如果红杉的特殊分布不是由土壤肥力或水分等优越条件决定的，那么它是由什么决定的呢？