Many people are confused about the usage of you and I and you and me. “I” is a subject pronoun, and “me” is an object pronoun. Use you and I when you are talking about the subject of a sentence: You and I have a meeting tomorrow. Use you and me when you are talking about the object of a verb or a preposition: They sent you and me a gift. This rule applies to different combinations of pronouns: Can you take a picture of my friends and me? In informal usage, either of them is acceptable. It is not uncommon to hear someone say “Nothing can come between you and I ” or “You and me need to have a talk”. However, it is always best to use the correct grammar in formal speech or writing. By the way, in English it is considered more polite to mention yourself last in a compound subject or object. So, do not say, “The party is for me and Sandy.”
Partly and partially are often used interchangeably to refer to “not completely” (the project had only been partially/partly finished) or “to some extent” (he is partly/partially responsible for the car accident). There are some differences in the patterns of usage, though. Partly is commonly used before clauses and phrases that serve an explanatory purpose: The financial services sector saw the highest growth rate, partly because of strong bonus payments. When you talk about things that together make up a whole—usually a physical object—use partly: The tower was built partly of sand stone and partly of marble. Yet, when describing physical conditions, it is more common to use partially: Large print ballot papers are available for the partially sighted.
Both farther and further are the comparative forms of “far”. To talk about physical distance, use either farther or further: The child was allocated a school further/farther away than his parents had hoped. To talk about figurative distance or the degree or extent of something, further is usually preferred: I will explain it a little further. In addition, further can be a verb meaning “to advance”: The object of the programme is to further sustainable development in the local area. The word further can also be used as an adjective meaning “more” or “additional”: Further details are available in the information pack.