这是本文档旧的修订版！

SPANISH SECTION2 UNIT1

hola
bienvenido/a
mucho gusto
bien
mal
feliz
triste
buenos diás
buenas tardes
buenas noches
hasta luego
hasta mañana

tú
usted

TÚ vs. USTED:
Tú is used in friendly conversations.​ 
Usted is used in more formal interactions(show respect). ​
tú语法上用第二人称，usted语法上用第三人称！

[estar] - estoy estás está
[ser] - soy eres es

ESTAR:
Use estar to describe things that are only temporarily true,
like the location of people and things.
Also use estoy/estás/está to talk about how people are feeling/doing.

SER:
Use ser for more permanent descriptions,
like explaining what someone is like.
Also use soy/eres/es to say where people are from.​