diff --git a/src/Expression.php b/src/Expression.php
index 2def1f4..803a024 100644
--- a/src/Expression.php
+++ b/src/Expression.php
@@ -17,6 +17,14 @@ class Expression
 
     public function raw(): string
     {
+        $operator = trim(strtolower($this->operator));
+        if ($operator == "in") {
+            $values = implode(",", str_split(str_repeat("?", count($this->value))));
+            return "(" . $this->condition . " "  . $this->operator . " (" . $values . ") )";
+        }
+        if ($operator == "between" && count($this->value) == 2) {
+            return "(" . $this->condition . " "  . $this->operator . " ? AND ? )";
+        }
         return "(" . $this->condition . " "  . $this->operator . " ? )";
     }
 
diff --git a/src/Query.php b/src/Query.php
index 1515898..a90b796 100644
--- a/src/Query.php
+++ b/src/Query.php
@@ -15,10 +15,13 @@ class Query
 
     public function addData($value)
     {
-        $this->data[] = $value;
+        if (is_array($value)) {
+            $this->data = array_merge($this->data, $value);
+        } else {
+            $this->data[] = $value;
+        }
     }
 
-
     public function getQuery(): string
     {
         return $this->query;
diff --git a/src/QueryBuilder.php b/src/QueryBuilder.php
index e427774..76e3427 100644
--- a/src/QueryBuilder.php
+++ b/src/QueryBuilder.php
@@ -86,6 +86,18 @@ class QueryBuilder
         return $this;
     }
 
+    public function whereIn($condition, array $values)
+    {
+        $this->wheres[] = new Expression($condition, "in", $values);
+        return $this;
+    }
+
+    public function whereBetween($condition, $value1, $value2)
+    {
+        $this->wheres[] = new Expression($condition, "between", [$value1,$value2]);
+        return $this;
+    }
+
     public function where($condition, $operator, $value = null)
     {
         if ($value === null) {
diff --git a/tests/DbTest.php b/tests/DbTest.php
index b7db0df..193d1d9 100644
--- a/tests/DbTest.php
+++ b/tests/DbTest.php
@@ -110,4 +110,31 @@ test("event", function() {
     $qb->find(1);
 
     expect($ret)->toBeObject(); 
+});
+
+test("where array", function() {
+
+    $row3 = new Model();
+    $row3->setTable("test");
+    $row3->col1 = "test3";
+    $row3->date1 = new \DateTime();
+    $ret3 = $row3->save();
+
+    $qb = new QueryBuilder("test");
+    $all = $qb->get();
+
+    expect(count($all))->toBe(3);
+
+    $qb->reset();
+
+    $between = $qb->whereBetween("id",2,3)->get();
+    expect(count($between))->toBe(2);
+
+    expect($between[0]->id)->toBe(2);
+
+    $qb->reset();
+    $in = $qb->whereIn("id",[2,3])->get();
+    expect(count($in))->toBe(2);
+    expect($in[0]->id)->toBe(2);
+
 });
\ No newline at end of file