Unit 1 Life on Mars-

修飾比較級的副詞：
even, far, a lot, a little, a bit
2. our spacecraft are too slow to carry large numbers of people to mars.（l. 7-8）
① spacecraft  復數__________________________
chinese, japanese, spacecraft, fish, sheep, deer（單復數同形）
② too … to 太……以致于不能……
she is too young to look after herself.
“too…to”結構可以轉換成 “so …that…”或 “not＋形容詞＋enough”句型。
the little boy is too short to reach the apple.
the boy is __________ short ____________ he can’t reach the apple.
the boy isn’t ____________ __________________ _________ reach the apple.
③ large numbers of 許多的，大量的
＝a（large）number of＝a（great）number of
很多樹
large numbers of trees
the number of … ……的數量
學生的數量
the number of the students
3. the journey might take only a very short time in space shuttles that travel at half the speed of light.（l. 9-11）
① 比較: 旅行 journey, travel, tour, trip, voyage
② take 在這兒表示 “花時間”.
it takes（took）sb. some time to do sth.
同意短語:
sb. spend time/money（in）doing sth. / on sth.
她每天花半小時練習跳舞。
it ______________ her half an hour _______ ____________________dancing.
she ______________ half an hour _______ ______________________ dancing.
she ______________  half an hour ______ ______________________.
（sth.）cost sb. money 某物花了某人多少錢
③ speed  n.
at full/ top speed 以全速
at a high /low speed
at a speed of…  以……的速度
以光速的一半的速度
at half the speed of light
v. speeded （sped）
speed up 加速
 
paragraph 3: food, water and air
1. humans need food, water and air to survive.（l. 12）
① human  a human    humans
germans   walkmans    policeman
②need（行為動詞）翻譯成“必須”，“需要”
1）need sth. to do sth. 需要某物去做某事
我們需要一些水喝。
we need some water to drink.
他們需要一些人去幫他們。
they need some people to help them.
2）（不）需要做某事
（don’t）need to do sth.
我不需要思考這個問題。
i don’t need to think about this question.                           
③ need（情態動詞）翻譯成“必須”，“必要”
（不）必要做某事
need（not）do sth.
你不必擔心。
you needn’t worry.
④ need（名詞）需要
the need for money
the need to improve my english
people in need
2. scientists will develop plants that can grow on mars.（l. 12）
develop   vi./ vt.
工業在迅速發展。
industry is developing rapidly.
這個鎮是由一個漁村發展起來的。
the town developed from/ out of a fishing village.