keep one’s word遵守诺言
227. work out算出,理解,明白put forward 提出 He didn’t work out the last question in the exam. He put forward a solution to the problem at the meeting. 228. be worth doing be worthy of doing值得 The novel is worth reading.
The issue(问题is worthy of considering. 229. yet多用于否定,疑问句中,放在动词后
still 可用于肯定,疑问句中,亦可在否定句中;在be 后, 但在其它动词前
He hasn’t finished his breakfast yet. He doesn’t understand yet. She still doesn’t understand He is still in bed.
230. leave sth some where把…忘在… He had left his text books in the classroom.
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