134. A complicating factor is that merit aid has become so popular v}rith middle-income families, who don't qualify for need-based aid，that many have come to depend on it.

英語四級譯文:
一個復雜的因素是，獎學金已經受到那些不符合助學金條件的中等收入家庭的歡迎，很多人開始依賴獎學金了。

四級詞匯講解:
本句的主干是factor is that。句中第一個that引導的是表語從句;該表語從句中包含so...that…的句型結構，其中that引導的是結果狀語從句;而兩個逗號之間who所引導的是middle-income families的非限制性定語從句。

become popular with的意思是“受……的喜愛，歡迎”，也可以說be popular with。如:
This young teacher is popular with students.這位年輕的老師很受學生的喜愛。

qualify for的意思是“有資格，有權(要求)”。如:
He doesn't qualify for unemployment benefit.他沒有資格獲得失業救濟金。

come to do sth.的意思是“逐漸開始做某事”。如:
They have finally come to believe that.他們終于開始相信那件事了。

depend on的意思是“依靠，依賴”。如:
Children always depend on their parents，孩子們總是依賴父母。

英語四級考點歸納:
so...that...意為“太，以至于”，常用句型為“主語+謂語+so+adj./adv.+that從句”，以so... that...引導的結果狀語從句可以轉換成帶不定式的簡單句，即可轉換為...enough to...或too...to...句型，但這種轉換必須符合下列條件:

※ 當主句和從句的主語一致，且that從句是肯定句時，可用...enough to...來替換。如:
The man is so strong that he can lift the heavy box.=The man is strong enough to lift the heavy box.這個人非常強壯，可以抬起很重的箱子。

※ 當主句和從句的主語不一致，且that從句是肯定句時，可以用...enough for sb. to do sth.來替換，但須注意不定式的賓語要省略。如:
The question is so easy that I can work it out.=The question is easy enough for me to work out.這個問題很容易，我能解答出來。

※ 當主句和從句的主語一致，且that從句是否定句時，可以用too...to...來替換。如:
I was so tired that I couldn't go on with the work.=I was too tired to go on with the work.我太累了，沒法繼續工作。

※ 當主句和從句的主語不一致，且that從句是否定句時，如果要用too...to...替換so...that... ,需用介詞for引出動詞不定式的邏輯主語，即用too...for sb. to do sth.來替換，注意不定式的賓語要省略。如:
It is so hot that we can't sleep. = It is too hot for us to sleep.天氣太熱了，我們無法入睡。