Languages 2

Double 了 (le)​
You can use 了 twice in a sentence to show that someone has been doing something for some time. Just say 了 after the verb, and then again after the amount of time.​
我工作了十个小时了。​
(Wǒ gōngzuò le shí ge xiǎoshí le​.) I’ve been working for ten hours.​
If the verb has an object (like 学中文) or is separable (like 跑步), repeat the verb again before adding 了.
他们学中文学了两年了。​
(Tāmen xué Zhōngwén xué le liǎng nián le.​) They have been learning Chinese for two years.​
我等你等了很久了。​
(Wǒ déng nǐ děng le hén jiǔ le.​) I have been waiting for you for a long time.​
她跑步跑了二十分钟了。​
(Tā pǎobù pǎo le èrshí fēnzhōng le.​) She has been running for twenty minutes. ​
更 (gèng, even more) + Adjective
To say that something is even more difficult, even harder, or even better, add 更 before the adjective .​
我觉得写汉字更难。​
(Wǒ juéde xiě Hànzì gèng nán.​) I think writing Chinese characters is even more difficult.​
明天会更好。​
(Míngtiān huì gèng hǎo.​) Tomorrow will be even better.​
我会更努力学习中文。​
(Wǒ huì gèng nǔlì xuéxí Zhōngwén.​) I will study Chinese even harder.​