高中英语人教版二年级上学期unit8 First aid

[20:34.47]=Keep them on a high shelf where children cannot reach.
[20:48.73]out of one's reach    within one's reach
[21:06.70]I put the box out of children's reach.
[21:15.95]The lake is within easy reach of the hoted.
[21:26.53]10.Don't reach sideways while standing on a ladder,
[21:33.09]Get down first and move the ladder.
[21:50.82]sideways   He dropped the box sideways,so it hit me.
[22:07.88]She was so fat that she could only get through the door sideways.
[22:18.83]while standing on a ladder = while you are standing on a ladder.
[22:34.76]Look out for cars when crossing the street.
[22:40.54]=Look out for cars when you are crossing the street.
[22:59.08]I'll go to see my friends Tom and Sharon while in Canada.
[23:05.72]while I am in Canada.
[23:11.57]11.Make sure that young children cannot get close to pools,
[23:19.43]lakes and rivers by themselves.
[23:30.19]get close to (sb./sth.)
[23:39.86]We got close to the girl to see what she was doing.
[23:50.31]They got close to the bottom of the cave and found a collection of coins.
[24:01.88]by oneself
[24:20.43]My daughter wanted to eat by herself.
[24:28.87]It is dark,we'd better not go out by ourselves.
[24:40.20]The students did their homework all by themselves.
[24:50.78]lesson 31
[24:56.14]1.What should you do if a person has drunk poison by mistake?
[25:07.19]by mistake
[25:15.73]Sorry,I took your pen by mistake.
[25:28.11]She put salt in her cup of coffee by mistake.
[25:38.14]2.Make the peroson throw up.
[25:45.90]throw up
[25:51.36]The smell of the gas made me throw up.
[26:01.10]She had eaten too much,and threw up on the way home.
[26:09.88]Grammar   Modal Verbs
[26:34.54]1.must/have to
[26:54.99]your homework must be handed in tomorrow.
[27:06.25]I have to wait here because I have no umbrella with me.
[27:23.31]You mustn't take the books out of the reading-room.
[28:02.68]You don't have ot finish your soup if you don't want to.
[28:11.32]2.Should/ought to
[28:30.50]"I'll start the work tomorrow."  "I think you should start at once."
[28:40.53]"I'll start the work tomorrow." "No.You ought to start at once."
[29:16.08] 3.need   need to+v.  needn't +v.
[29:33.32]You need to remain in bed.   You needn't remain in bed.
[29:41.99]"Need I come?"
[29:47.56]"Yes,you must."("No,you needn't.")
[30:00.72]Need I finish my work now?
[30:07.57]Yes,you must.No,you needn't.Yes,you must.No,you needn't.