1.感叹词用法
Welcome home/back/on board.
欢迎回国/归来（归校）/乘坐本次航班。
Welcome back to school.
欢迎归校/返校。
Welcome to our factory!
欢迎到我们工厂来（参观）。
Good evening everybody. Welcome to the show!
诸位，晚上好。欢迎观看本次演出！
2.动词用法“欢迎;迎接；接待；乐意接纳；欣然接受”
a welcoming smile欢迎的微笑
They were at the door to welcome us.
他们在门口迎接我们。
It is a pleasure to welcome you to our home.
很高兴欢迎您光临舍下。
We welcome you to join us on a special tour which explores this unique Australian attraction...
我们欢迎你加入探索这处独特的澳大利亚景观的特别之旅。
It gives me great pleasure to welcome you here today.
今天能在这里欢迎您是我极大的荣幸。
They welcomed the new volunteers with open arms (= with enthusiasm) .
他们热烈欢迎这些新的志愿者。
We welcome all new members to our club.
我们欢迎所有新成员加入我们的俱乐部。
The hotel staff welcomed us at the reception.
酒店员工在接待处欢迎我们。
We welcome the opportunity to collaborate with your company.
我们欢迎与贵公司合作的机会。
The team welcomed the news of the project’s success.
团队对项目成功的消息表示欢迎。
I warmly welcome this decision.
我热烈欢迎这一决定。
In general, the changes they had made were to be welcomed.
总的来说，他们所作的这些变动都会被欣然接受。
I must go and welcome the new arrivals.
我必须去迎接新到来的人。
The heroes were warmly welcomed at the airport.
英雄们在机场受到热烈欢迎。
3.形容词用法
受欢迎的;令人愉快的;(表示乐于让某人做某事)可随意;尽管…好了;受款待的
You are welcome.不必客气。（不用谢。）
be welcome to sth./ to do sth.
You are welcome to come in and have some tea.
欢迎你进来喝点茶。
You will always be welcome to come back.任何时候都欢迎你回来。
You are welcome to (use) my car.我的汽车你尽管用。
She’s welcome to stay here whenever she likes.
欢迎她随时到这里来。
You are welcome to join us for dinner.
欢迎您加入我们吃晚餐。
Everyone is welcome to attend the conference.
大家都欢迎参加会议。
They're welcome to stay here as long as they like.
他们在这里愿意住多久就住多久。
You are welcome to visit the hospital at any time.
你可以随时来医院（参观或访问）。
Like I said, you're always welcome to stay.
正如我以前所说的一样，我永远都欢迎你留下来。
I hope I made it clear to him that he was no longer welcome here.
我希望我已经给他讲清楚他在这里不再受欢迎。
I had the feeling we were not welcome at the meeting.
我有种感觉，人家并不欢迎我们参加这个会议。
For the government, the war was a welcome diversion from the country's economic problems.
政府欢迎这场战争，因为它转移了人们对国家经济问题的注意力。
Our neighbours made us welcome as soon as we arrived.
我们一到就受到了邻居们的欢迎。
You're always sure of a warm welcome there.
到了那里你肯定会受到热烈欢迎。
The fine weather made a welcome change .
天气转晴，令人心旷神怡。
a welcome sight
赏心悦目的景象
Our neighbours made us welcome as soon as we arrived.
我们一到就受到了邻居们的欢迎。
4.名词，迎接；接待；欢迎；反应方式，对待，接受
Thank you for your warm welcome .
感谢你们的热情接待。
The winners were given an enthusiastic welcome when they arrived home.
获胜者凯旋而归时受到了热烈欢迎。
receive a hero's welcome.
受到英雄般的欢迎
The Olympic team were given a hero's welcome on their return home.
奥运代表队回国时受到了英雄般的欢迎。
The winners were given an enthusiastic welcome when they arrived home.
获胜者凯旋而归时受到了热烈欢迎。
You're always sure of a warm welcome there.
到了那里你肯定会受到热烈欢迎。
You are assured of a warm welcome at this hotel.
你在这家旅馆肯定会受到热情欢迎。
I would like to express my warm welcome to your party.
我对你们的聚会表示热烈欢迎。
The new employee was given a warm welcome by the team.
新员工受到团队的热烈欢迎。
outstay/overstay your welcome.
作客太久而不再受欢迎
After the kindness that had been shown to him, he didn't want to outstay his welcome.
在受到热情款待后，他决定离开以免过多打搅主人。