Suǒyǐ B V 因为  ¹yīnwèi Conj Account Tā

 ¹yīnwèi* conj. because; for; on account of | Tā méi huíjiā shì ∼ nǐ. He did not go home because of you.

◆cons.

① ∼ A suǒyǐ B because A therefore B | ∼ tiān kuài hēi le, suǒyǐ wǒ yào zǒu le. Because it's about to get dark, I'd better take leave.

② ∼ de guānxi because of

③ ∼ A ér V to V because of A