We need to make some assumptions about children writing Eleven Plus examinations.
A true Eleven Plus child probably does not really need to be taught how to work through much of a verbal reasoning paper. The good Eleven Plus child can probably work out the answer given enough time. As teachers and parents we tend to jump in and supply the answer instead of drawing the answer out.
That children will be motivated to learn in their own way and in their own time. Exhorting your child to work hard may be counter productive.
Your child will always believe that he or she is behaving logically and sensibly. He or she will think that YOU are away with the fairies.
So remember the words of the famous proverb:
When the child tackles the verbal reasoning paper, reason flies out of the window.