请自行修改笔误

--fall downstairs 从楼上摔下来 downstairs是副词，修饰fell --fall off 从 跌落

--Her grandmother fell off the bed last night. 昨天夜里，她的奶奶从床上摔下来。

--fall out of 从 里面 摔出去 --The poor girl fell out of the window.

--fall down 摔倒

--He tried to stand up, but he fell down again. 他试图站起来，但是又摔倒了。

Have you hurt yourself?

--hurt的过去式，过去分词与原形一样

--hurt oneself 伤到自己

--hurt yourself 伤到你自己

现在完成时，强调过去发生的动作对现在的影响。

Yes, I have. I think that I’ve hurt my back.

--I think 后面接宾语从句

--I’ve hurt my back.我的背摔伤了，这句语由“that”引导，做think的宾语。

--I think that she has already gone to bed. 我想她己经上床睡觉了。 --He thinks that he is right.他认为他是正确的。

Try and stand up. Can you stand up? Here. Let me help you.

--and 连接两个动词

Come upstairs and see it. 上楼来看一看吧 Go and buy a new dress. 去买条新裙子吧！

--try to do 尽力，设法做 --I try to find him out. 我设法把他找出来

--You should try to help her. 你应该尽力帮助她。

try doing 试着 He tries telling his mother the truth. 他试着把真相告诉他的妈妈。

stand up can you stand up

--Let sb do sth 让某人做某事 --Let him go. 放 开他，让他走。 I’m sorry, Lucy. I’m afraid that I can’t get up.

--I’m afraid (“我恐怕”)，后面接由that引导的宾语从句。I can’t get up .做afraid 的宾语。

--get up =stand up 站起来

I think that the doctor had better see you. I’ll phone Dr. Carter.我想最好请医生来给你看一下，我去给卡特医生打电话。

--I think 后面接宾语从句，“the doctor had better see you”由that引导做think的宾语

--had better 最好 (后面加动词原形)

--The doctor had better see you. 最好请医生给你看一下。

--She’d better call her mother now.她最好给她的妈妈打个电话。 --phone the doctor = call the doctor 给医生打电话

The doctor says that he will come at once. I’m sure that you need an