一、句子分析：Letthefreshairin？
句子为祈使句，省略了第二人称的you，let是谓语动词，the fresh air 是宾语，介词in做宾语。
二、the air is clean and fresh是什么类型的句子？
the air is clean and fresh. 属于比较典型的陈述句，其中，主语the air，谓语部分由系动词is 和形容词clean, fresh加并列连词and构成系表结构来充当，全句意思是“(这里的)空气清爽新鲜。”
定冠词the修饰限定名词air, 表示某个特定地点的空气，而"空气"在英语语法里属于不可数名词，一般作为整体即单数出现，所以后面的系动词be用了 " is" 。
三、dictionary如果造句？
1、Could I borrow your dictionary?
2、Give the dictionary to him.
3、He threw my dictionary back.
4、You can certainly use my dictionary.
5、She bought an English dictionary for me.
6、Who has taken my dictionary away?
7、Writers often refer to a dictionary.
8、I left my dictionary in the library.
9、With the help of a dictionary editor, you can first build a dictionary and then use the dictionary lookup operator to embed the concept extraction in a flow.
10、A dictionary explains words and an encyclopedia explains facts.
11、A new Chinese-English dictionary will soon come out.
12、However, you can define the terms in a synonym dictionary and apply the synonym dictionary to the text index.
13、By 1807, Webster began writing an expanded English dictionary.
14、A revision of that dictionary has been published.
15、To compile an exhaustive dictionary is an exhausting task.
16、Dictionary attack — Guessing the password of a valid user using a brute force search through dictionary words.
17、The dictionary is stored in the table itself, implying a small amount of overhead (approximately 74kb).
18、So you need to add all expected variations manually to the variants of the dictionary.
19、The student came along with an English dictionary under his arm.
20、The new edition of the dictionary reflects the impact of these changes.
21、The keys of a dictionary are inherently unique, so it's possible to use a dictionary to remove duplicate lines from a file, and to do so in a way that preserves the original ordering of those lines.
22、In addition to the lexical dictionaries that are used during the dictionary lookup, there are also special internal inflection dictionaries.
23、The first edition of this dictionary has an impression of 10,000 copies and the total price is 1,000,000 yuan.
24、America's first dictionary -- Noah Webster's A Compendious Dictionary of the English Language -- was published 200 years ago and also introduced a crop of fresh words that have now become familiar.
25、One might not be surprised to find that a dictionary definition of this vintage omits a Japanese viewpoint.
26、If a word is not in the dictionary it gets a red underline, otherwise it's left alone.
27、ESL students and curious native speakers can search this dictionary to find idioms like "part and parcel," or "gnaw your vitals."
28、It is recommended that you implement a strong password policy to avoid any weak passwords being disclosed under brute force or dictionary attacks.
29、Leonard intends to record the Inughuits and, rather than writing a grammar or dictionary, produce an "ethnography of speaking" to show how their language and culture are interconnected.
四、ly’s fresh and healthy这个句子哪里错了？
不是Iy哦，是It哦
It 's fresh and healthy.
希望我的回答对你有帮助哦