While I was just looking through ‘Advanced Grammar in Use’ ( by M.Hewings), I came acroos the following rule:
With any of, each of, either of, neither of, or none of and plural noun we can use a singular or plural verb. However, we prefer a singular verb in careful written English. I agree with the above-mentioned phrases except for ‘each of’. And in exercise section the following sentence/sample was given:
Each of Susan’s collegues … sent her a personal letter of support.
In the ‘Key to exercises’ both has and have were given as the correct answers.
I wonder it is true.
Also, in ‘Practical English Usage’ (M.Swan) the following rule is given:
… a following verb is normally singular. (underline is mine)
Each of them [i]has[/i] problems.
Considering the word ‘normally’ in the rule, can I say that occasionally (at least in informal cases) a plural verb is also acceptable?
Thanks.