5 sentences

1. 他的性格外柔内刚，非常有主见。

   tā de xìng​gé wài róu nèi gāng, fēi​cháng yǒu zhǔ​jiàn.

   He is gentle on the outside but firm on the inside, with a very strong mind of his own.

   Source: Dong Chinese Dictionary

2. 由于没有主见，他的立场总是在摇摆。

   yóu​yú méi​yǒu zhǔ​jiàn, tā de lì​chǎng zǒng​shì zài yáo​bǎi.

   Lacking his own opinions, his stance is always wavering.

   Source: Dong Chinese Dictionary

3. 现在的女孩子普遍都很有自己的主见。

   xiàn​zài de nǚ​hái​zi pǔ​biàn dōu hěn yǒu zì​jǐ de zhǔ​jiàn.

   Girls nowadays generally have a mind of their own.

   Source: Dong Chinese Dictionary

4. 他是一个很有主见的人，从不随波逐流。

   tā shì yī gè hěn yǒu zhǔ​jiàn de rén, cóng bù suí​bō​zhú​liú.

   He is a person of strong opinions and never just follows the crowd.

   Source: Dong Chinese Dictionary

5. 他是个没有主见的人，对上司的话唯命是从。

   tā shì gè méi​yǒu zhǔ​jiàn de rén, duì shàng​si de huà wéi​mìng​shì​cóng.

   He has no mind of his own and is completely subservient to his boss.

   Source: Dong Chinese Dictionary