管保

guǎn bǎo bù huì shī shǒu

管保不会失手

be sure to succeed

yǒu le shuǐ hé féi guǎn bǎo néng duō shōu liáng shi

有了水和肥，管保能多收粮食。

With water and fertilizer, I'm sure more grains will be harvested.

nǐ guǎn bǎo tā huì lái ma

你管保她会来吗？

Are you sure she will come?

wǒ guǎn bǎo zhè ge bàn fǎ xíng

我管保这个办法行。

I guarantee this method will work well.

wǒ guǎn bǎo bù chū yì wài

我管保不出意外。

I guarantee there won't be any accidents.

zhè yàng zuò guǎn bǎo méi yǒu cuò

这样做管保没有错。

This is certainly the right way to do it.