Based on or basing on?

[Vaok]

1. Based on the present situation, they decided to take further action.

2. Basing on the present situation, they decided to take further action.

I know the phrase: base sth on sth; sth is based on sth.
But which of the above sentences is right here?

[Jamie (K)]

Number 1 is right.

[Tom]

Hi Jamie

Wouldn't you say that's a dangling?

[Tom]

Here is an interesting discussion on dangling participles.

http://www.english-test.net/forum/ftopic13648.html

Tom

[Jamie (K)]

[Corey_Chan]

What if they are not used at the beginning of the sentence:

1. I make this decision based on these reasons.
2. I make this decision basing on these reasons.
3. The decision is made based on these reaseons.
4. The decision is made basing on these reasons.

Does voices matter ?

[Lost_Soul]

In both cases it should be based on.
Based on is a fixed expression.

[Molly]

To me the problem is with trying to use "based on the present situation" when talking about the past.

? * Based on the present situation, they have decided to..

These are all OK:

Based on the present situation, they have decided to..

Basing things on the present situation, they have decided to..

Basing things on the situation at that time, they decided to...

Based on the situation at that time, they decided to...

[Prezbucky]

Examples:

I am basing my decision on that information.

My decision is based on that information.
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