1.The car was not destoryed badly in the accident,but five persons were hurt seriously .
2.There are 49 students who will go there,Tom and his twin brother included.或者including Tom and his twin brother
3.In case you are in trouble,we'll do everything we can to help you.某人竭尽所能做某事sb do everything/all/what sb can to do sth
4.The brave soldier would rather die than give in to the enemy.give in屈服give up 放弃
5.The Olympic Games were held once every four years.除了第一届奥运会之外,都用复数
6.Playing table tennis is one of my favourite sports.favourite没有比较等级
7.Canada is larger than any other country in North America.any包括所有的,要把Canada排除
8.He dared not go there alone at night,but he had to.有两种写法
He didn't dare to go there alone at night,but he had to.有to就用助动词did,没有就直接在dare后加not
9.The father was angry because his son spent too much time on computer games.too much加名词much too接形容词
10.The boy wanted to ride his bike in the street,but his mother told him not to .不定式的省略,完整的是The boy wanted to ride his bike in the street,but his mother told him not to ride his bike in the street,为了避免重复动词,省略不定式后的动词