What is sandracisneros's thesis in "only daughters"? ​

Sandra Cisneros thesis is that being the only daughter in a family of six brothers meant that she had to overcome hardships and challenges in her life. Additional, this ties into the theme of the story, which is that the "traditional" Mexican family's gender stereotypes can be broken and are not true.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

all of the statements cuz