The boy walks very far.
The boy and his sister walk very far.
Both of the above are correct. Why is that?
Which of these, however, is correct?
The boy, with his sister, walks very far.
The boy, with his sister, walk very far.
Which of these is correct?
The double decker, as well as the single decker, is assigned to travel over the Humber Bridge.
The double decker, as well as the single decker, are assigned to travel over the Humber Bridge.
Is there a change in the grammatical solution?
The woman, in addition to the man, has used the supermarket cafe.
The woman, in addition to the man, have used the supermarket cafe.
The mountaineer, including his supporter, climbs Yr Wyddfa regularly.
The mountaineer, including his supporter, climb Yr Wyddfa regularly.
Which of the next two are correct and why?
In the house there is a CD system and a DVD player.
In the house there are a CD system and a DVD player.
In what circumstances may each of these below be right but in each case not the other?
The boy and supporter of the English basketball team was going to see the game against the Welsh side.
The boy and the supporter of the English basketball team were going to see the game against the Welsh side.
If any answer is unclear and the reason unclear, mouseover the sentences.