affected
/əˈfektɪd; ə`fɛktɪd/ adj
not natural or genuine; pretended; artificial 不自然的; 不真实的; 装扮的; 做作的
an affected politeness, cheerfulness, etc 虚伪的礼貌, 强作欢颜
a highly affected style of writing 极为矫揉造作的写作风格
Do try not to be so affected. 千万别这么装模作样的.