pretend to be doing 是强调不定式的动作正在进行的过程中.
pretend to do是强调假装要做某事,而不一定正在进行或者是已经发生.
还有一种完成式pretend to have done 强调假装后面的动作已经完成.
pretend to be reading就表示他假装正在读书
pretend to sleep 表示他要去睡觉
pretend
vt.
假装, 装扮, (作为藉口或理由)伪称
To give a false appearance of; feign:
伪装：显示一副假面貌;伪装：
“You had to pretend conformity while privately pursuing high and dangerous nonconformism”(Anthony Burgess)
“当你私下里追求崇高而又危险的新教教义时，你仍得假装信奉国教”(安东尼·伯吉斯)
To claim or allege insincerely or falsely; profess:
假称：不诚实地或虚假地要求或宣称;自称：
doesn't pretend to be an expert.
不要伪称是个专家
To represent fictitiously in play; make believe:
装扮：在戏剧中虚构地扮演;使相信：
pretended they were on a cruise.
他们假装在海上巡逻
To take upon oneself; venture:
大胆冒昧地做：使自己承担义务;冒险干某事：
I cannot pretend to say that you are wrong.
我不敢说你是错误的
v.intr.(不及物动词)
To feign an action or a character, as in play.
扮演：假扮某种行为或某个角色，如在戏剧中假扮
To put forward a claim.
自称：提出要求
To make pretensions:
假装，矫作：
pretends to gourmet tastes.
自命有美食家的品味
adj.Informal (形容词)【非正式用语】
Imitation; make-believe:
模仿的;仿制的：
pretend money; pretend pearls.
伪币;假珍珠
Middle English pretenden
中古英语 pretenden
from Old French pretendre
源自 古法语 pretendre
from Latin praetendere