doubtful about. doubtful of . full of doubt对…怀疑；不能肯定

I am doubtful of the news．我怀疑那个消息的可靠性。

Are you doubtful of success？你对成功有怀疑吗？

I feel doubtful about whether to go．是否要去，我犹豫不决。

down on angry with对…生气

Father was down on him for not having passed the exam．父亲对他考试不及格很生气。

The director was down on Jack for being careless in his work．杰克因工作粗心而受到主任的指责。

down on opposed to反对

He is down on the suggestion．他反对这项建议。

down with . ill with患病

She didn't come to class because she was down with a cold．她因患感冒而没来上课。

down with . get rid of打倒

Down with the laws that have kept us slaves．打倒使我们一直当奴隶的法律。

doze off . fall asleep or partly asleep unintentionally打瞌睡

The old man dozed off by the fire．老人在火炉旁打瞌睡。

The lecture was so long and boring that most students dozed off．演讲又长又枯燥无味以致于许多学生都打瞌睡了。

draft out . write out a preliminary version起草

He drafted out his letter of resignation．他起草了一份辞职报告。

Can you draft out a plan for us？你能替我们草拟一份方案吗？

drag down . make weak使衰弱；使拖垮

His illness is dragging him down．他的病正在把他拖垮。

The gambler not only destroyed himself but also dragged his family down．赌博不仅毁了他自己而且也把他的家庭给拖垮了。

The high fever has been dragging him down．高烧使他感到虚弱。

If you marry that man，he'll drag you down．如果你嫁给那个人，他会把你给毁了。

drag down . pull down把…拉下

The thief was dragged down from the platform by the students．学生们把小偷从台上拉了下来。

drag in . introduce something unconnected with the main subject；introduce with an effort插入讨论；硬把…拉扯进来

Don't drag in things that are irrelevant to the topic under discussion．不要把与讨论无关的内容硬扯进来。

Whenever anyone mentions travel，she dragged in the trip to Canada she took two years ago．不论什么时候谁谈到旅游她都要把她两年前去加拿大的旅行硬扯进来。

Why must you always drag this subject in when we are talking？在我们谈话时你为什么总是把这个问题硬牵扯进来？

drag off . lead somebody against his will强拉（某人）

It's no good dragging your father off to the theater since he doesn't appreciate the opera．既然你父亲不喜欢歌剧，硬拉他去戏院也没什么好处。

Dragged off by my friend to the dance in the afternoon，I had to sit up till midnight，writing the paper．因为下午被我朋友强拉去跳舞，所以我只好熬夜写论文。

drag on . last an unpleasantly long time枯燥地拖延时间；过得很慢

The concert dragged on slowly for three hours．音乐会拖延了3小时。

We should speed up our negotiations；they have been dragging on far too long．他们拖的时间太长了，我们得加快谈判进程。

The meeting dragged on for more than six hours．会议拖拖拉拉开了6个多小时。

Time drags on when you have nothing to do．当你无事可做时，时间就过得很慢。

drag out . protract unduly or tediously无缘无故地或令人讨厌地延长

He dragged out his lecture until no one was listening．他的演讲拖得太长，大家都不想听了。

drag up . pull up把…拔出来

They tried every possible means to drag up the trees by the roots．他们想尽了一切办法把这些树连根拔起。

drag up . raise（a child）badly把孩子胡乱拉扯大

These children seem to have been dragged up rather than brought up．这些孩子看来是胡乱拉扯大的，没有很好地扶养。

drag up . introduce unpleasantly不愉快地牵扯

Must you drag up all these old scandals？你非要把过去的这些丑事牵扯进来吗？

Instead of dragging up their past disputes，the two parties achieved unity through criticism and self-criticism．双方不是纠缠历史旧帐，而是通过批评和自我批评加强了团结。

draw away . move off；pull away离开；拉开；引走

The car drew away as we approached．当我们走近时，车开走了。

The arrival of the teacher drew away the children from their play．老师来了，孩子们不做游戏了。

draw away . move ahead；move away from one's opponent in a race，跑到前头；在赛跑中跑到对手前面并与之拉开距离

The old man ran faster and faster and at last he started to draw away from others．这位老人跑得越来越快，终于超过别人并且拉开了距离。

The car was faster and soon drew away．小车速度比较快，一会儿就跑到前面去了。

draw away . isolate oneself孤立自己

She has drawn away lately and we can't find out why．她近来不跟人们来往，我们也搞不清是什么原因。