【小銀】評論
boys have less flexibility..........than girls ______ with "masculine" toys.原本是boys have less flexibility..........than girls have flexibility with "masculine" toys.boys have flexibility與girls have flexibility相對照。比較的結果是男生較少，所以男生那句加上less，中間插入than。而因為女生這句放在後面，所以受詞flexibility可以省略，have（擁有）還原成原型動詞do。不可以寫have，因為這是完成式的原型，但前句boys have flexibility的have並不是要表達完成式，只是「有」的意思。