billis looking forward to visiting Tianjin with his grandparents
bill主 is是助动词（不能单独做谓语）+looking forward to 做谓语 介词to后面接名词做宾语。 visit 变VISITing 动名词做宾语


主谓宾结构对吗？


问题是visit本身不是有名词词性吗。为什么要用动词词性变动名词？

Visit做名词的话后面再加天津就变成名词+名词了

是主谓宾。因为visit后面又跟了对象Tianjin, 所以变成了动名词。如果是用visit的名词形式， looking forward to a visit to Tianjin 也是正确的

Look forward to doing 好像是打算去做吧？ Kimi

He looks forward to visiting Tianjin

看上去更顺眼一点，前面不需要加is

回复5#斗牛士


时态是现在进行时，没什么问题

原来那句更顺眼

嗯，时态是正确的

名词没有去哪玩的意思，还得用动词词性

visit verb
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vis·​it | \ ˈvi-zət \
visited\ ˈvi-​zə-​təd , ˈviz-​təd \; visiting\ ˈvi-​zə-​tiŋ , ˈviz-​tiŋ \
Definition of visit (Entry 1 of 2)
transitive verb

1a: to pay a call on as an act of friendship or courtesy
b: to reside with temporarily as a guest
c: to go to see or stay at (a place) for a particular purpose (such as business or sightseeing)
d: to go or come officially to inspect or oversee
a bishop visiting his parishes
2: to go to see in order to comfort or help
3a(1): AFFLICT
visited his people with distempers
— Tobias Smollett
(2): INFLICT, IMPOSE
visited his wrath upon them
b: AVENGE
visited the sins of the fathers upon the children
c: to present itself to or come over momentarily
was visited by a strange notion
darchaic : COMFORT —used of the Deity
visit us with Thy salvation
— Charles Wesley
intransitive verb

1: to make a visit
also : to make frequent or regular visits
2: CHAT, CONVERSE
enjoys visiting with the neighbors
visit noun
Definition of visit (Entry 2 of 2)
1a: a short stay : CALL
b: a brief residence as a guest
c: an extended stay : SOJOURN
2: a journey to and stay or short sojourn at a place
3: an official or professional call or tour : VISITATION
4: the act of a naval officer in boarding a merchant ship on the high seas in exercise of the right of search

上学时候记过的固定搭配：look forward to doing sth

回复2#guxu


那我明白，只是想知道为什么必须用动词词性
看merriam 明白了，不怪人家学习好的都看英英词典

回复10#mavers


那是老师也不明白或者懒得细讲
给娃讲英语都快把我弄能疯了，当年自己学的时候也没研究过

你自己不是已经讲的差不多了吗，to后加名词，再加上3楼说的，基本就能清楚了。
visit不加ing的话，在这个句子里它就是个动词，如果要当成名词，就得像3楼那样用

回复13#mavers

不确定啊
不是一直在查吗，在学习吗。他那个用起来和原句意思就变了，但是语法没问题

3楼意思没变啊，还是一个意思

回复15#mavers

韦伯解释N的时候的意思
visit noun
Definition of visit (Entry 2 of 2)
1a: a short stay : CALL
b: a brief residence as a guest
c: an extended stay : SOJOURN
原句显然是去旅游去玩，如果做名词就没有去旅游去玩的意思了

回复10#mavers


looking forward 是不及物的短语动词加介词构成主谓宾结构do必须变成动名词做宾语
所以才有老师们教的looking forward to doing 固定用法

billis looking forward to visiting Tianjin with his grandparents
Tianjin 是定语吗？ with his grandparents 是什么玩意来的

look forword to visiting Tianjin (visiting是动名词）
或：look forward to a visit to Tianjin (visit是名词)

我感觉应该也还是有旅游的意思，特别再加上parents，不过我也不是很懂，这种细节，得要母语高手来了

visit是非谓语动词

回复18#Apocalyps


with伴随结构做状语，Visiting Tianjian 是整个句子的宾语

tianjin是visiting的宾语把，with是宾补，还是伴随状语没弄准
Visiting Tianjian 类似于 you like doing sth sth是doing的宾语，doing是整个句子的宾语

回复24#Apocalyps


我感觉是伴随状语吧，宾语补足语的作用一般是对宾语进行补充，例如They elected Trump president这个句子中president是对宾语Trump的补充。句子的宾语是Visiting Tianjin, with grandparents不是在解释补充Tianjin,而是说伴随着visit 这个动作发生的