Meaning of běn lái:
本来
original; originally; at first; it goes without saying; of course
Tā běnlái dǎsuàn qù lǚxíng, dàn yīnwèi shēngbìng qǔxiāo le.
他本来打算去旅行,但因为生病取消了。
He originally planned to travel, but canceled because he got sick.
Tā běnlái dǎsuàn qù lǚyóu, dàn yīnwèi tiānqì bù hǎo qǔxiāo le jìhuà.
她本来打算去旅游,但因为天气不好取消了计划。
She originally planned to travel, but canceled the plan due to bad weather.
Tian1 qi4 yu4 bao4 shuo1 jin1 tian1 ben3 lai2 hui4 xia4 yu3, dan4 xian4 zai4 shi4 qing2 tian1.
天气预报说今天本来会下雨,但现在是晴天。
The weather forecast said it was going to rain today, but now it's sunny.
Nǐ běnlái jiù yīnggāi zǎodiǎn dào jiā.
你本来就应该早点到家。
You should have gotten home earlier in the first place.
Tā běnlái jiù zhīdào zhège dá'àn.
他本来就知道这个答案。
He, of course, already knew the answer.