It’s right of [for] you to do so. 你这样做是对的。
注：用介词 of 或 for 的细微差别是：用 of侧重道义方面，而用 for 则侧重动作或行为方面。
6. That’s all right. (1) 不用谢(回答感谢)。如： A：Thank you very much. 非常感谢。 B：That’s all right. 不客气。 (2) 没关系(回答道歉)。如：
A：Sorry I’m late. 对不起，我迟到了。 B：It’s all right. 没关系。 ring
1. ring back 回电话。如：
John rang, and he wants you to ring him back. 约翰来过电话，他要你给他回电话。 2. ring off 挂断电话。如：
He rang off before I could explain. 我还没来得及解释，他就挂断了电话。 He rang off without giving his name. 他没有告知他的姓名就挂断了电话。 3. ring up 打电话(给某人)。如：
I’ll ring up to see if he’s there. 我要打电话看看他是否在那儿。
If I get further information, I will ring you up. 如果我有进一步的消息，我会打电话给你的。
risk
1. at risk 处于危险之中。如：
All of them were at risk. 他们都处于危险中。 My job is at risk. 我的工作保不住了。 2. at the risk of 冒着……的危险。如：
We did it at the risk of our lives. 我们冒着生命危险做此事。
He saved me life at the risk of losing his own. 他冒着生命危险救了我的命。 3. run [take] a risk 冒险。如：
That’s a risk I’m prepared to take. 那是我愿意冒险做的事。 To succeed in business one must be prepared to take [run] risks. 要在商场上取得成功，就得准备冒风险。 4. run [take] the risk of doing sth 冒……的危险。如：
You have to take a lot of risks in my job. 干我们这一行，就得冒很多风险。 He’s not willing to run the risk of losing his money. 他不愿冒丧失金钱的风险。 5. risk (doing) sth 冒着……的危险，冒险去做某事。如： I will risk the punishment. 我明知会受处罚也要去做。 We’re willing to risk losing our jobs. 我们愿冒失业的危险。 river
1. on the river
(1) 在河上，在河里。如：
Let’s go boating on the river. 我们去河里划船吧。 (2) 在河畔。如：
London is on the River Thames. 伦敦位于泰晤士河岸。 road
1. by road 走公路，坐汽车。如：
It takes three hours by road. 坐汽车要三个小时。
Did you come by road or by rail? 你是坐汽车来的还是坐火车来的? 2. in [on] the road 在路上，在……路。如：
He told the boy not to play in [on] the road. 他叫这个小男孩不要在路上玩。 Mr Smith lives in [on] Marston Road. 史密斯先生住在马斯顿路。 注：介词 in 多见于英国英语，on 多见于美国英语。 rob
1. rob sb of sth (1) 抢劫某人某物。如：
He robbed her of her money. 他抢了她的钱。 They robbed the rich to help the poor. 他们劫富济贫。 注：rob 的宾语有时是地点。如：
They robbed the bank of a lot of money. 他们从银得抢了一大笔钱。 (2) 剥夺某人有权利享用的东西。如：
The cat robbed her of her sleep. 这猫吵得她无法入睡。 They’ve robbed me of my happiness. 他们夺走了我的幸福。 role
1. play a role in 在……起作用(扮演角色)。如：
The rail workers played a key role in the struggle. 铁路工人在斗争中起了重要作用。 The U.N. plays an important role in international relations. 联合国在国际关系中扮演重要角色。
2. play one’s role as 尽某人当……的责任。如：
She tried to fulfil her role as a mother. 她尽她做母亲的责任。 3. play the role (of sb) 扮演(某人的)角色。如： He will play the leading role. 他将出演主角。
John played [took, took on] the role of Hamlet. 约翰扮演哈姆雷特的角色。 room
1. There’s room for sth (1) 有……的空地(空间)。
There is room for three more. 还能容纳三个人。 I’d like to bring the children if there’s room for them.
注：有时可用 to do sth 代 for sth。如：
There wasn’t really room to lie down comfortably. 没有足够的空间可以舒服地躺下。 (2) 有……的余地。如：
There is much room for improvement. 大有改进的余地。 There’s no room for doubt. 没有怀疑的余地。 3. have room for 有……的空间。如：
Have you room for me in your car? 你车里我还坐得进去吗? His brain has no room for maths. 他没有数学头脑。
3. make room for 给……空出场所，给……让路(让坐)。如： Move along and make room for me. 往前挪一下， 让出点空位给我。
Would you kindly make room for the old lady? 请你给这位老太太让个地方好吗? 3. leave room for (1) 为……留出空间。如：
Leave room for the big box. 留个地方放这个大箱子。 (2) 为……留有余地。如：
His answer left no room for doubt. 他的回答不容置疑。 rule
1. as a rule 通常，在通常情况下。如：
As a rule we go to bed at nine. 我们通常九点上床睡觉。 As a rule young people like beer. 一般说来， 年轻人喜欢喝啤酒。 2. by rule 按规定，循规蹈矩。如：
He does everything by rule. 他做任何事都循规蹈矩。 3. make it a rule to do sth 经常做某事，习惯做某事。如： He makes it a rule to get up at six. 他通常在六点起床。
She makes it a rule never to borrow money. 她无论如何也不向别人借钱。 注：该句型可有多种同义表达，如上面第一句也可说成： He makes a rule of getting up at six. It is his rule to get up at six. His rule is to get up at six. It’s a rule with him to get up at six.