方括号通常用来表示单词已被添加到直接引用中。
We went [to the new dinosaur exhibit] and had a great time.当你直接引用别人的东西时，使用方括号是非常重要的，如果忘记了则会导致错误的引用。
圆括号或括号与周围的标点符号
用括号把它们中的单词与句子的其余部分分开。
Meena (studied all night for) the grammar test.
Meena studied (all night) for the grammar test.
Meena studied for the grammar test.
除了跟在括号内容之后，否则句号、问号和感叹号只能放在括号之外面。
After dinner (an enormous, healthy salad,) Posey treated herself to ice cream.
After dinner, (an enormous, healthy salad) Posey treated herself to ice cream.
After dinner (an enormous, healthy salad), Posey treated herself to ice cream.
英语里使用括号的例句
1 (of clothes, furniture,etc.) not letting you feel physically comfortable; unpleasant to wear, sit on, etc.指衣服、家具等让人身体上不舒服的、不舒适的
2 not feeling physically relaxed, warm, etc.强调是身体上感到不放松的、不暖和的那种不舒服
3 anxious, embarrased or afraid and unable to relax焦虑的，尴尬的，不自在的(这个就是精神上的不舒服)
英文如何区分小括号和花括号
小括号：parentheses bracket ( )
中括号：bracket [ ]
大括号：curly braces { }
