Ideogrammic compound (會意). The ancient form of 得 is 㝵, composed of 貝 (“cowry”) + 又 (“hand”) — to pick up a cowry > to obtain valuables. A component 彳 was sometimes added to show that the cowry was picked up on the road.
In the Qin Bamboo and Slip script:
a horizontal line was add to the 又, which means it is replaced with the related 寸. This is a feature of Qin script, and many characters which used to compound with 又 now compound with 寸.
In the Shouwen seal script:
the 貝 corrupts into something resembling 見. However, this should be an error of Shouwen, because it only can be only found in Shouwen rather historical Qin Seal script and Qin Bamboo and Slip script.
In the clerical script:
the 貝 simplified as 目 (“eye”), such simplification can be seen in its early form like Spring and Autumn and Warring States bronze inscriptions and Chu Bamboo an Silk script as well as other characters such as 具. Then it corrupts into 旦 (“dawn”) in later clerical script, and Regular script inherited it.
Wǒ yǒu ge biǎozhínür, jīnnián èrshíliù, tán le hǎo jǐ ge duìxiàng le dōu méi tán chéng. Tā mā a, yīzhí tuō wǒ bāngmáng ne. Dé, béng biérén le, jiù shi tā le.[Pinyin]
I've got a niece who's 26 years old this year, who's already dated several guys but none worked out. Her mum's been nagging me to find a guy for her. Alright, we'll set the two up then. There's no need to find someone else.
interjective particle expressing frustration or helplessness