Qing Wen - How to Use 了: Emphasis(QQW0435) 了:表示句子结束,有时表示某些强烈的情绪。 le: biǎoshì jùzi jiéshù, yǒushí biǎoshì mǒuxiē qiángliè de qíngxù。 le: indicates that the speaker is finished speaking and at times indicates some strong emotions or feelings.
nǐ zěnme zuò zài zhèr le?! Why are you sitting here?!
他哪里晓得了?! tā nǎli xiǎode le?! What would he know!?
他哪里晓得了=他不可能晓得 tā nǎli xiǎode le= tā bù kěnéng xiǎode What would he know?! = He has no way of knowing
这件事,只有他能做了。 zhè jiàn shì, zhǐyǒu tā néng zuò le。 This thing, only he can do it.
所以这个“了”在这里只是把句子结束、说完,表示一种“唉,没办法”的 语气。 suǒyǐ zhè ge“ le” zài zhèlǐ zhǐshì bǎ jùzi jiéshù、 shuōwán, biǎoshì yīzhǒng“ ài, méi bànfǎ” de yǔqì。 So this "le" here, is used as a way of ending a sentence, finishing what you want to say, and expressing a sense of "sigh, can't do anything about that".
这件事只有她能做。 zhè jiàn shì zhǐyǒu tā néng zuò。 Only she can do this.