e into the room without knocking.
It is a great honor to invite President Hu to our company.
4. Not only / just…but (also) 连接相同的句子成分
(1) Not only the teacher but all the students _________ going to visit the Science Museum. (连接主语时根据就近原则)
(2) Not only ______________________(we learn) for our country, but we'll work for her in the future.
5. can't help doing sth. 禁不住做某事，不由得不做某事
(1) can't help but do 不得不……；不能不
(2) can’t help do 不能帮助做
She couldn't hep smiling.
When the streets are full of melting snow, you can't help but get your shoes wet.
He is so busy that he can’t help clean the house.
6. arise, rise, raise
raise vt. 使……上升；升起；提高；饲养；筹集（款项）；引起;唤起;扬起（灰尘）”等；
rise vi. “上升；升起上涨；站起身；起床”
arise vi. “出现、发生”
She raised her voice in anger.
The wind raised the fallen leaves from the ground.
She rises before it is light. (起床) Difficulties will arise as we do the work. (出现)
练习：The population of the city has ____________ to five million.
Between the copartners serious disagreements ___________.
They are going to _____________ funds for the school buildings.
The child ____________ from the ground and ran to his mother.
7. by sea, by the sea, in the sea, on the sea, at sea
(1) by sea “乘船”同 by ship 同义。 (2) by the sea “在海边”，相当于 by (at) the seaside
(3) in the sea “在海里，在海水中” (4) on the sea “在海面上”
(5) at sea 在海上；在航海
练习：These heavy boxes should be sent ______________.
When he woke up, the ship was ______________.
There are many plants and animals _________________.
The children enjoyed themselves ________________ on Children's Day.
8. live, living, alive, lively
(1) live adj. 活的；活生生的；(指动物；只作前置定语)；实况直播的 (不是录音)；
(2) living adj. 活着的，有生命的(作表语或定语)
(3) alive adj. ① 活着的；② 有活力的；有生气（作表语，作补语）
(4) lively adj. 活泼的；有生气的
练习：They caught the thief ___________.
The music is bright and _______________.
The laboratory is doing experiments with several _____________ monkeys.
The concert will be broadcast __________.
She was, he thought, the best ____________ novelist in England.
The old man is still _____________/ ____________
9. why的用法：
(1)The reason (why/for which….)is / was that ….
(2)当主语是This / That时，可以由because / why引导表语从句。
练习：The reason _______________he was late was that he got up late.
He got up late . That was __________ he was late for class.
He was late for class. That was ___________ He got up late.
The reason ____________ he gave you was reasonable.