forgetful

形容词 forgetful:

1. (of memory) deficient in retentiveness or range
   同义词：unretentive, short
2. not mindful or attentive- G.B.Shaw
   同义词：unmindful, mindless
3. failing to keep in mind
   同义词：oblivious

1. She is forgetful of her object.
   她忘却了自己的目标。
2. Children are forgetful and must be told time and again how to behave.
   孩子们没记性，必须反复告诉他们怎样表现自己的举止。
3. Grandfather is forgetful and often repeats himself when he tells a story.
   爷爷记忆不好，他讲故事的时候老爱重复。

for.get.ful

adj.（形容词）
Tending or likely to forget.
健忘的：倾向于或似乎忘记的
Marked by neglectful or heedless failure to remember:
不经心的；疏忽的：以疏忽的或不经心的无法记起为特征的：
例句：
forgetful of one`s responsibilities.
玩忽职守

Causing one to be unable to remember.
导致忘却的

【引伸】
forget.fully
adv.（副词）
forget.fulness
n.（名词）
<参考词汇><同义词>forgetful,unmindful,obliviousThese adjectives refer to inability or failure to remember.
这些形容词指不能或无法记起。
Forgetful usually implies a faulty memory or a tendency not to remember:
Forgetful 通常含有记忆力衰退或失去记忆的意思：
例句：
As I grow older I become increasingly forgetful. Less often the word is used as the equivalent ofunmindful, which applies principally to failure to keep in mind what should be remembered, as through deliberate oversight, heedlessness, or inattentiveness:
随着年龄的增长，我变得越来越健忘了。 偶尔这些词可用来代替unmindful， 该词主要用于指有意的疏忽、心不在焉或漫不经心等，而将应该记住的事忘了：

例句：
She ought not to be forgetful of her duties.
她不该玩忽职守。

例句：
Each passenger rushed toward the exit, unmindful of the others.
每个乘客都不顾其他人涌向出口。

Oblivious refers to failure rather than inability to remember,as because one is preoccupied or because one has chosen to disregard something:
Oblivious 更侧重于疏忽而不是失去记忆，如因为某人做事一心一意或有选择地疏忽一些事情：
例句：
Fortunately for the author, he was soon oblivious of the vitriolic criticism. Sometimes the term implies lack of awareness:
幸运的是，就作者而言，他很快就忘了这些辛辣的评论。 有时这个词含有缺少意识的含义：

例句：
For a person who has known them so long you are strangely oblivious to their faults.
对于一个认识他们很久的人来说，你异乎寻常地没有意识到他们的缺点。