if 和 so long as 用法上有什么区别？

语气不太一样吧，so long as 表示“只要....就”，语气较强较肯定！

if表示“如果”，是假设的意思。

结合语境理解吧，我觉得这题俩答案都可以！

if any ，if so ，if anything 的区别和用法。

时间状语从句(1)常用的连词有when, while, before, after, until(till),since, as soon as等。

(2)时间状语从句中一般不用将来时，若谈论将来的事情，往往用一般现在时代替，

如：I’ll go on with the work when I come back tomorrow./As soon as he finishes

the work, he will come to see me.

(3)when和while都表示“当……的时候”，但有区别。

when强调“特定时间”，如：

There was a loud knock at the door when he was just falling asleep.

while表示的时间是一段，而不是一点，如：

While he was having supper, he heard someone knock at the door.

while有时还有对比的含义，如：

While I was reading, he was writing.

2.原因状语从句(1)常由because, since, as引导。

(2)because表示直接的原因，着重点在从句，用于回答why,语气最强。

I can’t go to school because I am ill.

since一般表示对方已知的，无须加以说明的既成事实的理由，全句中心在主句，语气比because弱，常译为“既然”，如：Since you are ill, I’ll go alone.

as表示十分明显的原因，一般说明因果关系，着重点在主句，语气较弱。常译为“由于”，如：As it is raining hard, we won’t go hiking.?

for是个并列连词，只能放在另一个并列分句后面，表示一种推理或解释，或用作附加说明，而不是指理由或原因，语气最弱，一般不放在句首，常译成“因为”，如：You haven’t met him, for he didn’t come here.

3.条件状语从句

常由if(假如、如果)No matter(不管)来引导，如：No matter what he says，I won’t believe him，如果主句是一般将来时，从句往往用一般现在时来表示将来，如：I’ll go for a picnic if it is fine.

4.结果状语从句

一般由so...that, such...that引导，如：It’s such a heavy box that nobody can move it.

The box is so heavy that nobody can move it.

1 if any ------- 明确了范围：

Tom, please lend me a book on the history of China IF ANY

IF ANY==if you have any books of the sort I mention.

2 if anything ------没有明确范围：

Please give me someting to drink IF ANYTHING

IF ANYTHING == if you have anything / if there is anything that I can drink.

3 if so ------指代某个明确的动作：

I - Will Tom come tomorrow?

- I think so.

- IF SO, i Will tell him what I think of his travel plan.

IF SO== if he comes tomorrow

现在你明白了吗？你的问题很有质量，是我碰到的高质量问题之一。

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