which one is right "this is why i needed that" and "this was why i need that"?

Answer 1

This is why I needed that is right.

Answer 2

Strictly speaking, both would be accepted in common English, unless you are mixing the state of need (is needed/ was needed).
Honestly, the structure of your sentence highlights a common roadblock in communication: There is no concrete subject in your sentence, no qualifiers, no indication of correct tense.
My project is unfinished, that is why I asked to borrow the hammer.

I need stitches because my foot is cut open.

I needed stitches because my foot was bleeding badly.

You may mix tenses in this manner:
I needed soap to wash the dishes, but I no longer need it, since Kathy is bringing me some.

This and that are both demonstrative nouns, and must be tied to another noun to have proper meaning. This hammer, that car, which color. None of those questions are answered in your sentence. I don't even want to get started on what mixing tenses could suggest.

If anyone has taken issue with your manner of speaking, it is not because your grammar is necessarily incorrect, it it because you are speaking like someone who cannot contextualize your subjects. That is to say, you do not seem to have the ability to indicate an object or subject without it being present to point to.
But to answer your question directly, both sentences are, in effect, fragments, and both are incorrect.

Answer 3

Both are correct, depending on the usage. The sentence has two seperate parts, fırst a "noun clause" (this is/was....), second a "verb clause" (why I needed that), the latter of which is certainly in the past tense though the first could be both depending on how you intend it.

Let me give you a clearer example...Let the sentence be "This is/was the man who taught me everything".

Ok, here, the teaching process is definitely over, in the past. But if the man is still alive (or sometimes present/around) then we go like "this is...". But if the man is dead or not present (like he moved away, meaning you dont see him anymore) then you begin the sentence like "this was..."

I hope it helps :)

Answer 4

This is why I needed that is correct or it must be like this"this was why I needed that,because the main verb does not depend on the auxillary verb in such tenses.You mean to say that you needed something in the past to a person at present.OR the sentence which I gave means,you needed something in the past and you were telling it to someone before.

Answer 5

As an English major I would need to know how you plan on using the word need. Are you talking about present or past tense? They are both correct. It just depends on usage. Take care.

Answer 6

The first one sounds more appropriate......
See, the first one means that, you have just found out why you needed that and also, it is grammatically correct because in the second one, the first verb i.e., "was" would've been "is" or the "need" should've been "needed" (any one change you need to make) to make it more audibly correct. Moreover, you didn't say whether you're transforming it into past or present (tense). Neither of them are grammatically wrong ( both of them are grammatically, exactly right )..............................................................
It would also make more sense if you hadn't mixed it up or if you had written like this :-

" This was why I had needed (or simply I needed) that ". Or

" This is why I need that "..........................

Answer 7

Hey buddy that`s a easy one if taken in grammatical tone.
Now listen,ur both the options are wrong.Sorry to say that but it should be in this manner,"this was why i needed that"and"this is why i need that".But good ques.

Answer 8

Both are correct, but it depends upon what you are trying to say. I "needed that" implies you needed something in the past, such as "I needed that ingredient for my recipe, and I didn't have it".

"This was why I need that" implies you don't have the ingredient and you can't make the recipe now, because you haven't all the ingredients in your cupboards.

Answer 9

"this is why" is just nothing but referring to a reason. Just imagine, if u come to know of the reason (something u predicted before) after the occurence of some incident, or after u have done something, then u say, "This is why i needed that.". And, if you are referring to the reason, before the occurence of an incident, then you say, "This is why i need that."

Answer 10

It depends on whether the item is for present use or was only used in the past.