New words：

passive [ˈpæsɪv] adj.消极的；被动的；（动词形式）被动语态的

必记高频搭配

passive attitude 消极态度
Don’t take a passive attitude towards your study — you should ask questions actively.

passive behavior 被动行为
His passive behavior made him miss many good opportunities.

passive smoking 二手烟
Passive smoking is harmful to both adults and children.

passive voice 被动语态
Please change this active sentence into passive.
“The letter was written by my sister” is a passive sentence.

New words：

negatively /ˈneɡətɪvli/adv. 消极地；负面地；否定地
negativity /ˌneɡəˈtɪvəti/ n. 消极情绪；否定态度

必记高频搭配

Don’t think negatively all the time.
He negatively replied to my invitation because he had to work.
She always negatively comments on others’ choices, which makes people unhappy.

Complaining all the time is a quick way to spread negativity.
We should stay away from negativity and focus on the good things in life.

New words：

negative /ˈneɡətɪv/ adj. 消极的；否定的；阴性的；负的

a negative attitude 消极的态度

Don’t have a negative attitude towards your study.

a negative answer/reply 否定的答复

She gave me a negative reply when I asked her for help.

negative numbers 负数

Minus five and minus ten are both negative numbers.

a negative test result 阴性的检测结果

The COVID-19 test result was negative, so he felt relieved.

New words：

positively /ˈpɒzətɪvli/ adv. 积极地；乐观地；肯定地；明确地

positivity /ˌpɒzəˈtɪvəti/ n. 积极性；乐观态度

必记高频搭配

She thinks positively about everything.
He positively said that he had seen the missing dog.
We should act positively to protect the environment.

Positivity can help us get through hard times.
She always spreads positivity wherever she goes.

New words：

positive [ˈpɒzətɪv] adj.积极乐观的；良好的；有把握的；确信；正面的

源自拉丁语 ponere，意为 “放置、安放
由词根 “pon”（放置） + 后缀 “-itive”（形容词后缀）构成，引申为 “确定、肯定”
衍生词围绕 “肯定的、积极的；确定的” 两大核心语义展开

必记高频搭配

1.表 “积极的”（形容态度、想法、影响等）

a positive attitude 积极的态度

Keeping a positive attitude can help you solve many problems.

positive energy 正能量

She always brings positive energy to her friends.

a positive influence 积极的影响

Reading good books has a positive influence on children’s growth.

2.表 “肯定的；确定的”

a positive answer/reply 肯定的答复

He gave me a positive reply that he would come to the party.

be positive about sth 对某事有把握；确信某事
I’m positive about his success in the exam — he studied really hard.

be positive that + 从句 确信……

She is positive that she locked the door before leaving.

3.表 “（医学）阳性的；（数学）正数的”

a positive test result 阳性检测结果

The doctor told him that his COVID-19 test result was positive.

positive numbers 正数

Two plus three is a positive number.

attitude [ˈætɪˌtjuːd] n.态度；看法；