The correct phrasing is "as we discussed earlier."
The short answer is: No. The long answer is: As written, the sentence doesn't make sense and I'm having trouble figuring out what it's supposed to mean, so I'll take a guess and suggest a few correct versions:You have discussed this with Mr. Dissanayaka before. (Meaning: You and Mr. D. have talked about this.)Have you discussed this with Mr. Dissanayaka before? (Same as above except in a question form.)You have been discussed with Mr. Dissanayaka before. (Meaning: Mr. D. and someone else have talked about you.)
No, "as previously discuss" is not correct grammar. It should be "as previously discussed."
discussed because it will be past tense in the future
The correct phrase is "mail you had sent earlier." "Sent" is the past participle form of the verb, and it is used with forms of "have" when forming the past perfect tense.
Both "in reference to" and "with reference to" are correct and can be used interchangeably to introduce a topic or point that is being mentioned or discussed.
The short answer is: No. The long answer is: As written, the sentence doesn't make sense and I'm having trouble figuring out what it's supposed to mean, so I'll take a guess and suggest a few correct versions:You have discussed this with Mr. Dissanayaka before. (Meaning: You and Mr. D. have talked about this.)Have you discussed this with Mr. Dissanayaka before? (Same as above except in a question form.)You have been discussed with Mr. Dissanayaka before. (Meaning: Mr. D. and someone else have talked about you.)
No, "as previously discuss" is not correct grammar. It should be "as previously discussed."
no
discussed because it will be past tense in the future
No. This is not correct. "As (we) discussed" would be correct "As per" means "In accordance with", and cannot be used with a conjugated verb such as "discussed", but must refer to a noun, like a specific event. e.g. - "As per our discussion"
I discussed the procedure with her and her daughter. Though I prefer: I discussed the procedure with mother and daughter.
The correct phrase is "mail you had sent earlier." "Sent" is the past participle form of the verb, and it is used with forms of "have" when forming the past perfect tense.
'Discussed to' is incorrect. 'Discussed with' is correct. 'I discussed the matter with my brother and sister.'
That is the correct spelling of "previous" (prior, earlier, immediately before).
Advisors discussed the ups and downs of the stock market
Discussion
No. Earlier is the correct conjugation.