Sure, here are a few sentences that you can use to introduce your family members in English:
"This is my spouse, [Name]."
"These are my children, [Name1] and [Name2]."
"This is my parent, [Name]."
"This is my sibling, [Name]."
"This is my grandparent, [Name]."
"These are my cousins, [Name1] and [Name2]."
"This is my in-law, [Name]."
