Chinese

		to give back to someone; to return to owner	teacher
trad. (還給老師)		還給	老師
simp. (还给老师)		还给	老师
Literally: “to give [something] back to the teacher”.

Verb

還給老師

1. (idiomatic) to forget everything one has learnt

   我發現我的英語都還給老師了。 [MSC, trad.]

   我发现我的英语都还给老师了。 [MSC, simp.]

   Wǒ fāxiàn wǒ de Yīngyǔ dōu huángěi lǎoshī le. [Pinyin]

   I found out that I have forgotten all the English I have learnt.

Synonyms

• (Cantonese) 還畀老師／还畀老师