按理说 (àn lǐ shuō) according to common sense

Usage:

“按理说”指按照大家公认的基本知识来判断或者做某件事情。这个“理”指的是公认的道理、常识。
“按理说” means to judge or do something according to basic understandings. The “理” refers to common knowledge or logic.

Sentences:

1、 Jiǎ：Zánmen míngtiān hái yào qù mǎi dōngxi ma？
甲：咱们明天还要去买东西吗？
A: Do we still have to go buy things tomorrow?

Yǐ：An lǐ shuō，zhè xiē dōngxi yǐjīng gòu yòng le.
乙：按理说，这些东西已经够用了。
B: According to common sense, these things are enough already.

2、Jiǎ：An lǐ shuō，wǒ míngtiān 7diǎn zǒu jiù kěyǐ.
甲：按理说，我明天7点走就可以。
A: According to common sense, I can leave at 7 o’clock.

Yǐ：Nǐ háishì zǎoxiē ba ，wànyī yùdào dǔchē ne!
乙：你还是早些吧，万一遇到堵车呢!
B: You’d better make it a little earlier, just in case of traffic jams!

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