The above should have helped to clarify these three verbs; you ought now to know how to use them; I must stop writing immediately!请问:should have helped是否要改为should help?
...sp;1,167 people with melanomas to 1,101 who didn't have the cancer ,found that using sunscreen routinely,did give some protection.这里的compareing...to....不是应该翻译成 比喻成什么什么?这里的to会不会不恰当,是不是应该用成with呀?
They also knew from experiments on pigs, conducted by others, that exposure to one virus during early life hasthe potential to make infections of other, quite different, viruses later on much more severe than they otherwise would have been. 请问老师much more severe 这句话在句子中做...