8:00p.m.on August 8 用什么介词? useful book前面用什么 a/an/the/ / /

问题描述:

8:00p.m.on August 8 用什么介词? useful book前面用什么 a/an/the/ / /

AT
A

at
a

at 8 pm on August 8
表示具体在几点,用at
如:I get up at 6 o'clock
a useful book,useful音标是[ˈju:sfəl]不是以元音字母开头的.

at 8:00p.m.on August 8
特指用the
不特指用a,useful的开头音标是辅音