Red Alert 3: Unpack MCV to build a Construction Yard

Here is another small problem that I faced while the second tutorial of Red Alert. This one is the most basic action that one could do in the game: but I had problems finding the right place to do the job.

In the very beginning of the second tutorial, I was asked to command the MCV [Mobile Construction Vehicle] to convert into a Construction Yard. That sounds like a very easy job to do right ? : )

Unfortunately, I faced some real problems understanding the place where I needed to build the required building.

After clicking on MCV and after selecting the special ability, a blurred building is attached to our mouse. We now have to place this building on the terrain/ground somewhere.

As soon as I clicked on the special ability button, another blurred building appeared on the screen at the top left side in front of the Ore Mine. I later found that this building was the Ore Refinery.

Anyway, when this blurred refinery building showed up, I thought I made to build the Construction Yard on the spot where the refinery showed up. I clicked on this blurred building and on other places around it, but nothing happened. Then I tried to find some other place for placing the Construction Yard, but nothing seemed to happen.

It was so confusing: why would the refinery sketch show up when I am trying to build a totally different building?

Anyway, after sometime, I found that I needed to click on the area just behind the MCV, in order to build the required stuff. If you move the mouse all around the area, you will see all red spots where just near the MCV, there is an all green zone for the Construction Yard.

Now after sometime, I realized that may be the refinery will show up every time I will be building a base and before I actually build the refinery.

I think it is because the game wants to let us know that this spot is reserved for the refinery that we will soon build [not sure if this is the actual reason : ) It is just a guess].