重點(diǎn)講解：
1. ahead of 提前；
Thanks to your help, we accomplished the task ahead of schedule.
虧得你們幫忙，我們才提前完成了任務(wù)。
2. in the middle of (某件事或某段時(shí)間的)中期；
Scientific socialism originated in the middle of the nineteenth century.
科學(xué)社會(huì)主義創(chuàng)始于19世紀(jì)中葉。
3. take in 收留，收容(尤指無家可歸者或逃難者)；
The monastery has taken in 26 refugees.
修道院已經(jīng)收留了26位難民。
4. be subject to 受…支配的；服從于…的；
This matter is subject to joint examination and approval by the Planning Commission and the economic commission.
這件事由計(jì)委會(huì)同經(jīng)委審批。