5. Pardon?
请再说一遍。
还能这样说：
I beg your pardon?
Pardon me?
6. Please speak a little slowly.
请讲慢一点。
还能这样说：
Would you speak more slowly?
Would you slow down a little, please?
谚语：
Those who are quick to promise are generally slow to perform.
轻诺寡信。
7. We have a bad connection. I can't hear you clearly.
信号不好，我听不清你在说什么。
还能这样说：
The connection is bad. Would you speak more clearly?
I can hardly hear what you are saying because of bad signal.
应用解析：
connect up 连起来，接上;
connect with 和……有联系，和……有关;
connect in series 串联
8. Please speak a little louder.
请讲大声一点儿。
还能这样说：
Can you speak louder?
Could you speak out a little?
应用解析：
a loud voice 声音洪亮;
loud laugh 高声大笑;
a loud denial 断然的否认;
a loud dresser 穿着庸俗;
to be loud in demands 不断地索求