出国留学 英语培训，比较知名的出国留学英语网校有新东方在线。无论是师资还是服务等各方面都深获广大学员好评。可以去试听课程，或者咨询老师相关疑问。
5、'No', I answered confidently.
'Would you mind unlocking this suitcase please?' 'Not at all,' I answered.
Would you mind unlocking this suitcase, please?
注意：mind 后面的动名词形式
6、The Officer went through the case with great care.
The Officer went through the case with great care.
=The Officer examined the case carefully
with great care 强调相当的仔细
7、All the thing I had packed so carefully were soon in a dreadful mess.
in a mess 乱作一团
介词 in 和名词搭配，表示一种状态
-- in good order 秩序井然 / -- in good health 身体健康
-- in a good mood 心情好 / -- in a good temper 脾气好