Regarding the past tense and the use of a word.

[Joe333]

Sentence: "If they had any case or proof against him after so many investigations they would have register(ed) an FIR against him by now"

My question: Should the word register in the sentence be in the form of past tense ? And does the word by now has been used correctly in the sentence ?


Thanks

[bhaisahab]

Sentence: "If they had any case or proof against him after so many investigations they would have register(ed) an FIR against him by now"

My question: Should the word register in the sentence be in the form of past tense ? And does the word by now has been used correctly in the sentence ?


Thanks

Yes, it should be "registered" "have registered" is present perfect, which is constructed with "have" + the past participle of the verb. "By now" is used correctly.

[Joe333]

Yes, it should be "registered" "have registered" is present perfect, which is constructed with "have" + the past participle of the verb. "By now" is used correctly.

Thanks sir. One more question did I use the verb does correctly in my question which you just answered ?

[bhaisahab]

Thanks sir. One more question did I use the verb does correctly in my question which you just answered ?

No, "does" is not necessary or correct.
"And does the word by now has been used correctly in the sentence".
What you need to say is:
"Has the phrase "by now" been used correctly?"