1)can could 表示能力;可能(过去时用could), 只用于现在式和过去式(could)。be able to可以用于各种时态。They will be able to tell you the news soon.他很快就能告诉你消息了。 2)只用be able to a. 位于助动词后。 b. 情态动词后。 c. 表示过去某时刻动作时。 d...
成人高考学位英语备考练习:非谓语动词 一、不定式 (一)基本结构 to do to be doing to have done to be done to have been done 学位英语真题汇编 1、Judging from his manners at the party, he does
A: Can you do me a favor,please? 可以帮我一个忙吗? B: Sure. 当然可以。 A: Shall we go now? 我们现在走吗? B: Certainly. 当然可以。 A: Can you help me make a phone call to room 8018,please? 可以帮我给8018房间打个电话吗? B: OK, no problem /Pardon? 好...
teacher at a New Hampshire high school where learning is not something of books and tests and mechanical memorization, but practical. When did it become accepted wisdom that students should be able to name the 13th president of the United States bu...
But more work needs to be done before the long-term impact is known. Moore's study was published earlier this year in the Journal of Animal Science. "We are working on producing diagnostic markers for efficient animals. We are looking at the next g...
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