Have you ever play 'Rock paper scissors'with you relatives when you were little?As people grow up,they may move or work geographical therefore they spend less time with their cousin,grandparents etc.Some people believe that extended family members are indispensable in life.However,I believe that people nowadays are independent hence no necessary to have relatives.My reasons are given as follows.
I think the topic is asking about the role of extended family in two different generations. For example the importance of relatives for the families lived 70 years ago and modern families, don't think it talks about two periods of our lives. So, I think you need to revise the thesis statement.
we all know that more people today are independent.
the opening sentence of a paragraph is supposed to be a topic sentence that includes general and precise ideas. Unfortunately, this topic sentence is not clear and does not show what you are going to argue in this paragraph
America,
remember that "America" is a continent not a country, so it is better to say "the US"
Especially in America,when you are eighteen,you are considered as an adult and have to move out of parents house.Furthermore ,when you start a new family,you might have your own kids.When this happened,you extended family members become less important tha n your husband,kids in your life because you have your own family who you need to focus on and take care of.
this could be true in the past too, but why they were important at that time? Again, I think the topic asks to compare the traditional and modern families.try to use different structures for the sentences you write. Don't use "you" too much. It is better to use a mixture of active and passive voices in your essay to make the essay more dynamic and interesting. To learn how to write a complex sentence I suggest you to read as many texts as possible. One of the easiest complex structures that you can use is "not only ... but also", or "on the one hand ... and on the other hand". I recommend you to read the book "focus on vocabulary" to study more sophisticated words and see how professional writers organize a text.hope this helps
Cheers