New words：

deny [di'nai] v.否认；拒绝；否定；不承认

deny to do‌ 强调动作的未来性或未完成性，通常用于表示拒绝去做某事
deny doing‌ 强调动作的完成性或已发生性，通常用于表示否认做过某事

Sample Sentences：

He denied to go to the party.
He denied going to the party.
There's no denying that he was a great man.
He denied knowing anything about their plans.
No one can deny that smoking is bad for your health.

New words：

involvement [inˈvɔlvmənt] n. 卷入；参与；投入；加入；插手；牵连

Sample Sentences：

You have no proof of my involvement in anything
Moscow has denied any involvement in eastern Ukraine.
We're looking into her possible involvement in a murder.

deny [di'nai] v.否认；拒绝；否定；不承认

New words：

involved [in'vɔlvd] adj.涉及的；牵连的；有关的；卷入
be involved in 卷入；涉及；专心

Sample Sentences：

I got involved in a quarrel about the price.
I was so involved in my book I didn't hear you knock.
The evidence shows that Paul is involved in that murder.
Some people tried to stop the fight but I didn't want to get involved.

New words：

involve [in'vɔlv] v.需要；包含；牵涉；影响；加入

Sample Sentences：

Many of the crimes involved drugs.
I'm still not clear what the job involves.
How many vehicles were involved in the crash?
Parents should involve themselves in their child's education.

vehicle [ˈviːəkl] n. 车辆；交通工具

New words：

gradual ['grædjuəl] adj. 逐渐的；逐步的；渐进的；平缓的
gradually ['grædjuəli] adv. 渐渐地；逐步地；逐渐地

Sample Sentences：

I make a gradual plan for him to jog.
Recovery from the disease is very gradual.

We began to know each other gradually.
We watched their ship moving gradually farther away.