八年級英語下冊詞組和重點教案2
maybe you fear that you won’t be able to find anything to eat in a foreign country.
however, if you ‘re feeling brave, singapore is an excellent place to try new food.
if you go to see lions, tigers, or foxes during the daytime, they’ll probably a asleep.
one great thing about singapore is that the temperature is almost the same all year round..this is because the island is so close to the equator. so you can choose to go whenever you like—spring, summer, or winter.
現(xiàn)在完成時句型舉例：
have you ever been to an amusement park? 你曾經(jīng)去過游樂園嗎?yes, i have./ no, i haven’t.
i have never been there. me neither=neither have i. 我也沒有.
where is he? he has gone to the beijing.
how long has he been in beijing? （不能用come/arrive）
i’ve never been to an aquarium. 我從沒去過水族館.
i have been a student here for a year. 我成為這的學(xué)生有一年了. （不能用become）
=i became a student here a year ago.
he has been dead for two years.（不能用die）=he died two years ago.
i have been a teacher since ten years ago(for ten years.) （不能用become）
i have just/ever/already/never seen the movie. have you ever heard of the man before?
本單元語法講解
現(xiàn)在完成時
現(xiàn)在完成時態(tài)表示過去發(fā)生的動作對現(xiàn)在造成的影響或結(jié)果。本時態(tài)標志詞：
already （“已經(jīng)”，用于肯定句中，放在have /has之后或句尾）；
yet （“仍然”“還”，用于疑問句或否定句的句尾）
just（“剛剛”，放在have /has之后）；
before（“以前”，放在句尾）；
ever（“曾經(jīng)”，放在have /has之后）
never （“從沒有”，在have /has之后）
例句：
our teacher has just left.
we have studied english already.
3.i have not finished the homework yet.
he has never been to beijing before.
某個動作從過去已經(jīng)開始,一直持續(xù)到現(xiàn)在,還有可能持續(xù)到將來.動作的持續(xù)性要通過一段時間來表示一段時間的表達方法有兩種:
for: +一段時間 for a year for two weeks for three years
since +過去的某一時刻, since nine since last week
since +一般過去時態(tài)的時間狀語從句 since you came ; since you got home.
注意：結(jié)束性動詞不能和表示一段時間的時間狀語連用,但是它們可以轉(zhuǎn)換成相應(yīng)的延續(xù)性動詞.
直接用延續(xù)性動詞
buy– have；catch(get) a cold –have a cold；borrow—keep；become—be；put on-- wear
轉(zhuǎn)換成be+名詞
join the army – be a soldier；join the party –be a party member；
go to school– be a student
3轉(zhuǎn)換成be+形容詞或副詞
die—be dead；finish – be over；begin—be on；leave—be away ； fall sleep – be asleep close – be closed come to/ go to/arrive at(in)+某地—be in(at) +某地