I'll call you up about seven o 'clock.
我7点钟左右给你挂电话。
How about tomorrow night at seven o 'clock?
明天晚上七点如何？
By the way, the party begins at seven o 'clock, but I hope you can come a litter earlier to help me prepare something about the party.
顺便说一下，晚会是七点开始，但是我希望你能来早点帮我准备有关聚会的事。
My wife usually baths the kids about seven o 'clock.
我妻子通常七点给孩子们洗澡。
My wife usually baths the kids about seven o 'clock.
我妻子通常七点给孩子们洗澡。
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