教程列表：

gold

goal

goat

glad

glass

giraffe

get

geography

gentle

gave

gardener

farther

future

funny

fun

fruit

fruit

frog

frighten

fried

fresh

free

fragile

found

forward

fork.

forget

follow

foreign

follow

flour

flag

fire

finish

finger

fine

finally

film

fill

field

fight

few

festival

female

feel

feed

february

favourite

fat

introduce

interested

instead

important

idea

ice

hurt

hurry

hungry

hot

hope

hook

hole

hold

hold

hold

history

hit

high

helpful

hide

help

height

heard

heart

headache

hear

healthy

hate

head

hardly

hard

hard

harbour

happen

hand

hamburger

hall

half

guide

guitar

guest

guess

grow

ground

granddad

grass

grandchild

got

lock

listener

list

line

lion

light

lift

life

letter

lie

letter

less

least

leave

league

length

leaf

lazy

laugh

large

later

lantern

last

language

land

lab

known

knock

kitchen

king

kill

kind

kilometre

kick

key

keep

kangaroo

just

just

june

july

join

jacket

january

information

indian

island

invite

invitation

invent

midnight

message

medicine

menu

mend

measure

member

meeting

matter

medicine

measure

meant

meaning

meal

matter

marry

market

mark

march

manner

manage

male

magazine

made

madam

machine

lucky

luck

low

love

loud

lost

lose

long

lonely

modern

moment

moon

more

month

mountain

move

much

museum

million

mind

mind

minus

minute

miss

miss