精讲课 笔记随视频锁定
使役动词

右侧笔记支持独立滚动。边听名师连读拆解,边对照右侧的语法事实与统计数据笔记。

make 和 let 后面都跟不带 to 的不定式,但意义上和用法上有区别。
make sb. do 让(命令)带有一定的“强迫,迫使”的意思 let sb. do 让(建议)提出建议、允许
She made the assistant bring almost everything in the window. Let's take a taxi. Let's go.
The teacher made the boy write the exercise again. Don' t let the children touch anything in th room please
make + 名词/代词 + do 迫使,致使(不带 to) let+名词/代词 + do 允许(不带 to)
  • She enjoyed herself making the assistant bring almost everything in the window.
  • What made him change his mind?
  • That beard makes you look much older than you really are.
  • Don't let him persuade you. 不要让他把你说服了.
  • Let me try. 让我试一拭.
  • Please let us have more time, will you?如果宾语是 us,则不能缩写成 let’s
  • He let it be known that the house was his.后面可以跟一个被动的、不带 to 的不定式
be + made 被动语态含有"迫使,致使"必须带 to let 祈使、建议、(大家一起)采取某一行动
  • He was made to work fourteen hours a day.
  • He was made to change his mind.
  • Let’s not waste any more time. 否定:“Let’s not…”
  • Don’t let’s waste any more time. 否定:“Don’t let’s…”
  • We were not allowed to speak.一般不用于被动意义来表示“被允许”,这时可用 allow

Verbs of Perception 感官动词(see, hear, watch, notice, feel 等)

  • I saw him cross the street.我看见他穿过了马路。(强调看到全过程或动作已结束)
  • We heard her sing in the next room.我们听见她在隔壁房间唱歌。
  • I noticed a man enter the building suspiciously.我注意到一个男人鬼鬼祟祟地进入了大楼。

Causative Verbs 使役动词(make, let, have)

  • My boss made me work overtime again.老板又让我加班了。
  • Please let me know if you change your mind.如果你改变主意,请告诉我。
  • I’ll have my secretary call you later.我会让我的秘书稍后给你打电话。

Semi-modal Phrases 半情态短语(had better, would rather)

  • You had better tell the truth.你最好实话实说。
  • I would rather stay at home than go out.我宁愿待在家里也不愿出去。
  • We had better not wake the baby.我们最好别吵醒宝宝。

The "But/Except" Structure do nothing but/except 结构(当前面有 do 时,后面省 to)

  • She did nothing but cry all day.她整天除了哭什么也没干。
  • I had no choice but to wait.注意:若前面没有 do,to 必须保留。
  • They did nothing except complain about the food.他们除了抱怨食物之外什么也没做。

The Flexible "Help" help 的特殊性(可带 to 也可以不带)

  • Could you help me carry these bags?你能帮我提这些包吗?(省略 to 更口语化)
  • Exercise helps reduce stress.运动有助于减轻压力。
  • He helped to clean the kitchen.他帮忙清理了厨房。(带 to 也没错,但略显正式)

The "Why" Questions Why / Why not 引导的疑问句

  • Why waste money on things you don't need?为什么要浪费钱买不需要的东西呢?
  • Why not join us for dinner tonight?今晚为什么不和我们一起吃晚饭呢?
  • Why wait until tomorrow?为什么要等到明天?

Passive Voice Trap 被动语态陷阱(还原 to 的特殊情况)

  • He was seen to cross the street.注意:make, see, hear 在被动语态中必须还原 to。
  • I was made to redo the whole project.我被迫重做了整个项目。
  • The child was heard to cry for help.听到那个孩子在呼救。

本课不规则动词

原型 (Base Form) 过去式 (Past Tense) 过去分词 (Past Participle)
seek sought sought