了 le at the end of the sentences expresses that the entire situation which is described in the sentence pictures a change compared with the previous situation.
Action verb
他 | 不 | 吃 | 米 | 饭 | 。 |
tā | bù | chī | mǐ | fàn | _ |
he | not | eat | rice | food | _ |
he, him, other | no, not, after negative question: yes | eat | cooked rice | 。 | |
He doesn't eat rice. |
他 | 不 | 吃 | 米 | 饭 | 了 | 。 |
tā | bù | chī | mǐ | fàn | le | _ |
he | not | eat | rice | food | particle | _ |
he, him, other | no, not, after negative question: yes | eat | cooked rice | grammatical particle of time | 。 | |
He doesn't eat rice anymore. |
Adjective verb
你 | 很 | 胖 | 。 |
nǐ | hěn | pàng | _ |
you | very | fat | _ |
you | very, quite | get fat | 。 |
You are fat. |
你 | 胖 | 了 | 。 |
nǐ | pàng | le | _ |
you | fat | particle | _ |
you | get fat | grammatical particle of time | 。 |
You have become fat. |
Modal verb
他 | 会 | 看 | 报 | 。 |
tā | huì | kàn | bào | _ |
he | meet | look | report | _ |
he, him, other | future: will, meet, be able to | look, read | report | 。 |
He can read newspapers. |
他 | 会 | 看 | 报 | 了 | 。 |
tā | huì | kàn | bào | le | _ |
he | meet | look | report | particle | _ |
he, him, other | future: will, meet, be able to | look, read | report | grammatical particle of time | 。 |
He can read newspapers now. |
Modal verb
他 | 不 | 喜 | 欢 | 米 | 饭 | 。 |
tā | bù | xǐ | huān | mǐ | fàn | _ |
he | not | happiness | joyous | rice | food | _ |
he, him, other | no, not, after negative question: yes | like | cooked rice | 。 | ||
He doesn't like rice. |
他 | 不 | 喜 | 欢 | 米 | 饭 | 了 | 。 |
tā | bù | xǐ | huān | mǐ | fàn | le | _ |
he | not | happiness | joyous | rice | food | particle | _ |
he, him, other | no, not, after negative question: yes | like | cooked rice | grammatical particle of time | 。 | ||
He doesn't like rice anymore. |